diff --git a/src/posix/platform/ip6_utils.hpp b/src/posix/platform/ip6_utils.hpp
new file mode 100644
index 000000000..15d4ef634
--- /dev/null
+++ b/src/posix/platform/ip6_utils.hpp
@@ -0,0 +1,70 @@
+/*
+ *  Copyright (c) 2021, The OpenThread Authors.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. Neither the name of the copyright holder nor the
+ *     names of its contributors may be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "openthread-posix-config.h"
+#include "platform-posix.h"
+
+#include <arpa/inet.h>
+
+namespace ot {
+namespace Posix {
+namespace Ip6Utils {
+
+/**
+ * This utility class converts binary IPv6 address to text format.
+ *
+ */
+class Ip6AddressString
+{
+public:
+    /**
+     * The constructor of this converter.
+     *
+     * @param[in]   aAddress    A pointer to a buffer holding an IPv6 address.
+     *
+     */
+    Ip6AddressString(const void *aAddress)
+    {
+        VerifyOrDie(inet_ntop(AF_INET6, aAddress, mBuffer, sizeof(mBuffer)) != nullptr, OT_EXIT_ERROR_ERRNO);
+    }
+
+    /**
+     * This method returns the string as a null-terminated C string.
+     *
+     * @returns The null-terminated C string.
+     *
+     */
+    const char *AsCString(void) const { return mBuffer; }
+
+private:
+    char mBuffer[INET6_ADDRSTRLEN];
+};
+
+} // namespace Ip6Utils
+} // namespace Posix
+} // namespace ot
diff --git a/src/posix/platform/netif.cpp b/src/posix/platform/netif.cpp
index c84c21cb6..63c7c720b 100644
--- a/src/posix/platform/netif.cpp
+++ b/src/posix/platform/netif.cpp
@@ -151,40 +151,9 @@ unsigned int gNetifIndex = 0;
 char         gNetifName[IFNAMSIZ];
 
 #if OPENTHREAD_CONFIG_PLATFORM_NETIF_ENABLE
+#include "posix/platform/ip6_utils.hpp"
 
-namespace {
-
-/**
- * This utility class converts binary IPv6 address to text format.
- *
- */
-class Ip6AddressString
-{
-public:
-    /**
-     * The constructor of this converter.
-     *
-     * @param[in]   aAddress    A pointer to a buffer holding an IPv6 address.
-     *
-     */
-    Ip6AddressString(const void *aAddress)
-    {
-        VerifyOrDie(inet_ntop(AF_INET6, aAddress, mBuffer, sizeof(mBuffer)) != nullptr, OT_EXIT_ERROR_ERRNO);
-    }
-
-    /**
-     * This method returns the string as a null-terminated C string.
-     *
-     * @returns The null-terminated C string.
-     *
-     */
-    const char *AsCString(void) const { return mBuffer; }
-
-private:
-    char mBuffer[INET6_ADDRSTRLEN];
-};
-
-} // namespace
+using namespace ot::Posix::Ip6Utils;
 
 #ifndef OPENTHREAD_POSIX_TUN_DEVICE
 
diff --git a/src/posix/platform/udp.cpp b/src/posix/platform/udp.cpp
index 1d0307c57..027990afd 100644
--- a/src/posix/platform/udp.cpp
+++ b/src/posix/platform/udp.cpp
@@ -55,6 +55,10 @@
 
 #if OPENTHREAD_CONFIG_PLATFORM_UDP_ENABLE
 
+#include "posix/platform/ip6_utils.hpp"
+
+using namespace ot::Posix::Ip6Utils;
+
 static const size_t kMaxUdpSize = 1280;
 
 static void *FdToHandle(int aFd)
@@ -392,26 +396,24 @@ otError otPlatUdpConnect(otUdpSocket *aUdpSocket)
         if (len > 0 && netifName[0] != '\0')
         {
             fd = FdFromHandle(aUdpSocket->mHandle);
-            VerifyOrExit(setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &netifName, len) == 0, error = OT_ERROR_FAILED);
+            VerifyOrExit(setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &netifName, len) == 0, {
+                otLogWarnPlat("Failed to bind to device: %s", strerror(errno));
+                error = OT_ERROR_FAILED;
+            });
         }
 
         ExitNow();
 #endif
     }
 
-    switch (connect(fd, reinterpret_cast<struct sockaddr *>(&sin6), sizeof(sin6)))
+    if (connect(fd, reinterpret_cast<struct sockaddr *>(&sin6), sizeof(sin6)) != 0)
     {
-    case 0:
-        break;
 #ifdef __APPLE__
-    case EAFNOSUPPORT:
-        VerifyOrExit(isDisconnect, error = OT_ERROR_FAILED);
-        break;
+        VerifyOrExit(errno == EAFNOSUPPORT && isDisconnect);
 #endif
-
-    default:
+        otLogWarnPlat("Failed to connect to [%s]:%u: %s", Ip6AddressString(&aUdpSocket->mPeerName.mAddress).AsCString(),
+                      aUdpSocket->mPeerName.mPort, strerror(errno));
         error = OT_ERROR_FAILED;
-        break;
     }
 
 exit:
diff --git a/tests/scripts/expect/_common.exp b/tests/scripts/expect/_common.exp
index 653ac7be8..f68380b82 100644
--- a/tests/scripts/expect/_common.exp
+++ b/tests/scripts/expect/_common.exp
@@ -55,6 +55,11 @@ proc wait_for {command success {failure {[\r\n]FAILURE_NOT_EXPECTED[\r\n]}}} {
     }
 }
 
+proc expect_line {line} {
+    expect -re "\[\r\n \]($line)(?=\[\r\n>\])"
+    return $expect_out(1,string)
+}
+
 proc spawn_node {id {type ""} {radio_url ""}} {
     global spawn_id
     global spawn_ids
@@ -81,23 +86,23 @@ proc spawn_node {id {type ""} {radio_url ""}} {
             spawn /usr/bin/env GCOV_PREFIX=$gcov_prefix $::env(OT_POSIX_APPS)/ot-cli $radio_url
             send "factoryreset\n"
             wait_for "state" "disabled"
-            expect "Done"
+            expect_line "Done"
             send "routerselectionjitter 1\n"
-            expect "Done"
+            expect_line "Done"
         }
         cli {
             spawn /usr/bin/env GCOV_PREFIX=$gcov_prefix $::env(OT_SIMULATION_APPS)/cli/ot-cli-ftd $id
             send "factoryreset\n"
             wait_for "state" "disabled"
-            expect "Done"
+            expect_line "Done"
             send "routerselectionjitter 1\n"
-            expect "Done"
+            expect_line "Done"
         }
         mtd {
             spawn /usr/bin/env GCOV_PREFIX=$gcov_prefix $::env(OT_SIMULATION_APPS)/cli/ot-cli-mtd $id
             send "factoryreset\n"
             wait_for "state" "disabled"
-            expect "Done"
+            expect_line "Done"
         }
     }
 
@@ -126,15 +131,17 @@ proc dispose_node {id} {
 
 proc setup_leader {} {
     send "dataset init new\n"
-    expect "Done"
+    expect_line "Done"
+    send "dataset masterkey 00112233445566778899aabbccddeeff\n"
+    expect_line "Done"
     send "dataset commit active\n"
-    expect "Done"
+    expect_line "Done"
     send "ifconfig up\n"
-    expect "Done"
+    expect_line "Done"
     send "thread start\n"
-    expect "Done"
+    expect_line "Done"
     wait_for "state" "leader"
-    expect "Done"
+    expect_line "Done"
 }
 
 proc dispose_all {} {
@@ -149,18 +156,16 @@ proc dispose_all {} {
 proc get_ipaddr {type} {
     send "ipaddr $type\n"
     expect "ipaddr $type"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set rval $expect_out(1,string)
-    expect "Done"
+    set rval [expect_line {([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}}]
+    expect_line "Done"
 
     return $rval
 }
 
 proc get_extaddr {} {
     send "extaddr\n"
-    expect -re {([0-9a-fA-F]{16})}
-    set rval $expect_out(1,string)
-    expect "Done"
+    set rval [expect_line {[0-9a-fA-F]{16}}]
+    expect_line "Done"
 
     return $rval
 }
@@ -168,20 +173,19 @@ proc get_extaddr {} {
 proc get_rloc16 {} {
     send "rloc16\n"
     expect "rloc16"
-    expect -re {([0-9a-fA-F]{4})}
-    set rval $expect_out(1,string)
-    expect "Done"
+    set rval [expect_line {[0-9a-fA-F]{4}}]
+    expect_line "Done"
 
     return $rval
 }
 
 proc setup_default_network {} {
     send "channel 11\n"
-    expect "Done"
+    expect_line "Done"
     send "panid 0xface\n"
-    expect "Done"
+    expect_line "Done"
     send "masterkey 00112233445566778899aabbccddeeff\n"
-    expect "Done"
+    expect_line "Done"
 }
 
 set timeout 10
diff --git a/tests/scripts/expect/_multinode.exp b/tests/scripts/expect/_multinode.exp
index dc24c8fa0..ee568e387 100644
--- a/tests/scripts/expect/_multinode.exp
+++ b/tests/scripts/expect/_multinode.exp
@@ -51,39 +51,39 @@ proc setup_node {node {mode "r"} {role "child"}} {
     expect "eui64"
     expect -re {([0-9a-f]{16})}
     set eui64 $expect_out(1,string)
-    expect "Done"
+    expect_line "Done"
 
     switch_node 1
     send "commissioner state\n"
     expect {
         "disabled" {
-            expect "Done"
+            expect_line "Done"
             send "commissioner start\n"
-            expect "Done"
+            expect_line "Done"
             expect "Commissioner: active"
         }
         "active" {
-            expect "Done"
+            expect_line "Done"
         }
     }
     send "commissioner joiner add $eui64 $::JOINER_PSK\n"
-    expect "Done"
+    expect_line "Done"
     wait_for "netdata steeringdata check $eui64" "Done"
 
     switch_node $node
     send "mode $mode\n"
-    expect "Done"
+    expect_line "Done"
     send "ifconfig up\n"
-    expect "Done"
+    expect_line "Done"
     send "joiner start $::JOINER_PSK\n"
-    expect "Done"
+    expect_line "Done"
     wait_for "" "Join success"
     send "thread start\n"
-    expect "Done"
+    expect_line "Done"
     wait_for "state" $role
-    expect "Done"
+    expect_line "Done"
 
     switch_node 1
     send "commissioner joiner remove $eui64\n"
-    expect "Done"
+    expect_line "Done"
 }
diff --git a/tests/scripts/expect/cli-anycast.exp b/tests/scripts/expect/cli-anycast.exp
deleted file mode 100644
index 3081a6bea..000000000
--- a/tests/scripts/expect/cli-anycast.exp
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/usr/bin/expect -f
-#
-#  Copyright (c) 2020, The OpenThread Authors.
-#  All rights reserved.
-#
-#  Redistribution and use in source and binary forms, with or without
-#  modification, are permitted provided that the following conditions are met:
-#  1. Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer.
-#  2. Redistributions in binary form must reproduce the above copyright
-#     notice, this list of conditions and the following disclaimer in the
-#     documentation and/or other materials provided with the distribution.
-#  3. Neither the name of the copyright holder nor the
-#     names of its contributors may be used to endorse or promote products
-#     derived from this software without specific prior written permission.
-#
-#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-#  POSSIBILITY OF SUCH DAMAGE.
-#
-
-source "tests/scripts/expect/_common.exp"
-
-
-set spawn_id [spawn_node 1]
-
-send "panid 0xface\n"
-expect "Done"
-send "ifconfig up\n"
-expect "Done"
-send "thread start\n"
-expect "Done"
-
-wait_for "state" "leader"
-expect "Done"
-
-send "ping fdde:ad00:beef:0:0:ff:fe00:fc00\n"
-expect "Done"
-expect "16 bytes from "
-expect {
-    "fdde:ad00:beef:0:0:ff:fe00:fc00" abort
-
-    -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})} {}
-
-    timeout abort
-}
-
-dispose
diff --git a/tests/scripts/expect/cli-big-table.exp b/tests/scripts/expect/cli-big-table.exp
index f0aaa8c4f..a1fd28e3e 100755
--- a/tests/scripts/expect/cli-big-table.exp
+++ b/tests/scripts/expect/cli-big-table.exp
@@ -41,6 +41,6 @@ for {set i 2} {$i <= $max_node} {incr i} {
 
 set spawn_id $spawn_ids(1)
 send "child table\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-channel.exp b/tests/scripts/expect/cli-channel.exp
index e6ef4efbb..238bac98d 100755
--- a/tests/scripts/expect/cli-channel.exp
+++ b/tests/scripts/expect/cli-channel.exp
@@ -32,17 +32,17 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 send "channel monitor stop\n"
-expect "Done"
+expect_line "Done"
 send "channel monitor\n"
 expect "enabled: 0"
-expect "Done"
+expect_line "Done"
 send "channel monitor start\n"
-expect "Done"
+expect_line "Done"
 send "channel monitor\n"
 expect "enabled: 1"
 expect -re {interval: \d+}
@@ -53,28 +53,28 @@ expect "occupancies:"
 for {set i 11} {$i <= 26} {incr i} {
     expect -re "ch $i \\(0x\[0-9a-f\]{4}\\) +\\d+\\.\\d+% busy"
 }
-expect "Done"
+expect_line "Done"
 send "channel monitor something_invalid\n"
 expect "Error 7: InvalidArgs"
 
 send "channel manager change 15\n"
-expect "Done"
+expect_line "Done"
 send "channel manager\n"
 expect "channel: 15"
 expect "auto: 0"
-expect "Done"
+expect_line "Done"
 send "channel manager select 1\n"
 expect "Error 13: InvalidState" # Because of insufficient channel monitor samples
 send "channel manager delay 200\n"
-expect "Done"
+expect_line "Done"
 send "channel manager interval 20000\n"
-expect "Done"
+expect_line "Done"
 send "channel manager supported 0x7fff800\n"
-expect "Done"
+expect_line "Done"
 send "channel manager favored 0x7fff800\n"
-expect "Done"
+expect_line "Done"
 send "channel manager auto 1\n"
-expect "Done"
+expect_line "Done"
 send "channel manager\n"
 expect "channel: 15"
 expect "auto: 1"
@@ -82,7 +82,7 @@ expect "delay: 200"
 expect "interval: 20000"
 expect "supported: { 11-26}"
 expect "favored: { 11-26}"
-expect "Done"
+expect_line "Done"
 send "channel manager something_invalid\n"
 expect "Error 7: InvalidArgs"
 
diff --git a/tests/scripts/expect/cli-child-supervision.exp b/tests/scripts/expect/cli-child-supervision.exp
index 1c8bf7f3c..6c8f1c1df 100755
--- a/tests/scripts/expect/cli-child-supervision.exp
+++ b/tests/scripts/expect/cli-child-supervision.exp
@@ -34,14 +34,14 @@ setup_two_nodes "-"
 
 switch_node 1
 send "childsupervision interval 30\n"
-expect "Done"
+expect_line "Done"
 send "childsupervision interval\n"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "childsupervision checktimeout 30\n"
-expect "Done"
+expect_line "Done"
 send "childsupervision checktimeout\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-child.exp b/tests/scripts/expect/cli-child.exp
index 9ac2a5ca4..1e7309966 100755
--- a/tests/scripts/expect/cli-child.exp
+++ b/tests/scripts/expect/cli-child.exp
@@ -33,16 +33,8 @@ source "tests/scripts/expect/_multinode.exp"
 setup_two_nodes
 
 switch_node 2
-send "extaddr\n"
-expect "extaddr"
-expect -re {([0-9a-f]{16})}
-set extaddr $expect_out(1,string)
-expect "Done"
-send "rloc16\n"
-expect "rloc16"
-expect -re {([0-9a-f]{4})}
-set rloc $expect_out(1,string)
-expect "Done"
+set extaddr [get_extaddr]
+set rloc [get_rloc16]
 
 switch_node 1
 send "child table\n"
@@ -50,13 +42,13 @@ expect "| ID  | RLOC16 | Timeout    | Age        | LQ In | C_VN |R|D|N|Ver|CSL|Q
 expect "+-----+--------+------------+------------+-------+------+-+-+-+---+---+-------+------------------+"
 expect -re "\\| +(\\d+) \\| 0x$rloc \\| +\\d+ \\| +\\d+ \\| +\\d+ \\| +\\d+ \\|\\d\\|\\d\\|\\d\\| *\\d+\\| \\d \\| +\\d+ \\| $extaddr \\|"
 set child_id $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "child list\n"
 expect "child list"
 expect $child_id
-expect "Done"
+expect_line "Done"
 send "child $child_id\n"
 expect "Ext Addr: $extaddr"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-childip.exp b/tests/scripts/expect/cli-childip.exp
index 9a6d06af8..294324df0 100755
--- a/tests/scripts/expect/cli-childip.exp
+++ b/tests/scripts/expect/cli-childip.exp
@@ -33,26 +33,18 @@ source "tests/scripts/expect/_multinode.exp"
 setup_two_nodes
 
 switch_node 2
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
-expect "Done"
-send "rloc16\n"
-expect "rloc16"
-expect -re {([0-9a-f]{4})}
-set rloc $expect_out(1,string)
-expect "Done"
+set addr [get_ipaddr mleid]
+set rloc [get_rloc16]
 
 switch_node 1
 send "childip\n"
 expect "$rloc: $addr"
-expect "Done"
+expect_line "Done"
 send "childip max 2\n"
-expect "Done"
+expect_line "Done"
 send "childip max\n"
 expect "2"
-expect "Done"
+expect_line "Done"
 send "childip max something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "childip something_invalid\n"
diff --git a/tests/scripts/expect/cli-coap.exp b/tests/scripts/expect/cli-coap.exp
index 871da396f..f7bb65402 100755
--- a/tests/scripts/expect/cli-coap.exp
+++ b/tests/scripts/expect/cli-coap.exp
@@ -34,47 +34,39 @@ setup_two_nodes
 
 switch_node 1
 send "coap start\n"
-expect "Done"
+expect_line "Done"
 send "coap resource test/resource\n"
-expect "Done"
+expect_line "Done"
 send "coap set Testing123\n"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_1 $expect_out(1,string)
-expect "Done"
+expect_line "Done"
+set addr_1 [get_ipaddr mleid]
 
 switch_node 2
 send "coap start\n"
-expect "Done"
+expect_line "Done"
 send "coap parameters request 3000 4 3 5\n"
 expect "Transmission parameters for request:"
 expect "ACK_TIMEOUT=3000 ms, ACK_RANDOM_FACTOR=4/3, MAX_RETRANSMIT=5"
-expect "Done"
+expect_line "Done"
 send "coap parameters response 2500 4 3 3\n"
 expect "Transmission parameters for response:"
 expect "ACK_TIMEOUT=2500 ms, ACK_RANDOM_FACTOR=4/3, MAX_RETRANSMIT=3"
-expect "Done"
+expect_line "Done"
 send "coap get $addr_1 test/resource\n"
-expect "Done"
+expect_line "Done"
 expect "coap response from $addr_1 with payload: 54657374696e67313233" # ASCII of "Testing123"
 send "coap post $addr_1 test/resource con Testing123\n"
-expect "Done"
+expect_line "Done"
 expect "coap response from $addr_1"
 send "coap put $addr_1 test/resource con Testing123\n"
-expect "Done"
+expect_line "Done"
 expect "coap response from $addr_1"
 send "coap delete $addr_1 test/resource con\n"
-expect "Done"
+expect_line "Done"
 expect "coap response from $addr_1"
 send "coap post $addr_1 test/resource none Testing123\n"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_2 $expect_out(1,string)
-expect "Done"
+expect_line "Done"
+set addr_2 [get_ipaddr mleid]
 
 switch_node 1
 expect "coap request from $addr_2 GET"
@@ -88,20 +80,20 @@ expect "coap response sent"
 expect "coap request from $addr_2 POST with payload: 54657374696e67313233"
 send "coap resource\n"
 expect "test/resource"
-expect "Done"
+expect_line "Done"
 send "coap set\n"
 expect "Testing123"
-expect "Done"
+expect_line "Done"
 send "coap parameters request default\n"
 expect "Transmission parameters for request:"
 expect "default"
-expect "Done"
+expect_line "Done"
 send "coap parameters response default\n"
 expect "Transmission parameters for response:"
 expect "default"
-expect "Done"
+expect_line "Done"
 send "coap help\n"
-expect "Done"
+expect_line "Done"
 send "coap parameters something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "coap get\n"
diff --git a/tests/scripts/expect/cli-coaps.exp b/tests/scripts/expect/cli-coaps.exp
index e2ee895b5..6a9521294 100755
--- a/tests/scripts/expect/cli-coaps.exp
+++ b/tests/scripts/expect/cli-coaps.exp
@@ -34,49 +34,42 @@ setup_two_nodes
 
 switch_node 1
 send "coaps x509\n"
-expect "Done"
+expect_line "Done"
 send "coaps start\n"
-expect "Done"
+expect_line "Done"
 send "coaps resource test/resource\n"
-expect "Done"
+expect_line "Done"
 send "coaps set Testing123\n"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_1 $expect_out(1,string)
-expect "Done"
+expect_line "Done"
+
+set addr_1 [get_ipaddr mleid]
 
 switch_node 2
 send "coaps x509\n"
-expect "Done"
+expect_line "Done"
 send "coaps start\n"
-expect "Done"
+expect_line "Done"
 send "coaps connect $addr_1 5684\n"
-expect "Done"
+expect_line "Done"
 expect "coaps connected"
 send "coaps get $addr_1 test/resource\n"
-expect "Done"
+expect_line "Done"
 expect "coaps response from $addr_1 with payload: 54657374696e67313233" # ASCII of "Testing123"
 send "coaps post $addr_1 test/resource con Testing123\n"
-expect "Done"
+expect_line "Done"
 expect "coaps response from $addr_1"
 send "coaps put $addr_1 test/resource con Testing123\n"
-expect "Done"
+expect_line "Done"
 expect "coaps response from $addr_1"
 send "coaps delete $addr_1 test/resource con\n"
-expect "Done"
+expect_line "Done"
 expect "coaps response from $addr_1"
 send "coaps post $addr_1 test/resource none Testing123\n"
-expect "Done"
+expect_line "Done"
 send "coaps get $addr_1 default\n"
-expect "Done"
+expect_line "Done"
 expect "coaps response from $addr_1"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_2 $expect_out(1,string)
-expect "Done"
+set addr_2 [get_ipaddr mleid]
 
 switch_node 1
 expect "coaps request from $addr_2 GET"
@@ -90,12 +83,12 @@ expect "coaps response sent"
 expect "coaps request from $addr_2 POST with payload: 54657374696e67313233"
 send "coaps resource\n"
 expect "test/resource"
-expect "Done"
+expect_line "Done"
 send "coaps set\n"
 expect "Testing123"
-expect "Done"
+expect_line "Done"
 send "coaps help\n"
-expect "Done"
+expect_line "Done"
 send "coaps get\n"
 expect "Error 7: InvalidArgs"
 send "coaps\n"
@@ -107,10 +100,10 @@ expect "Error 7: InvalidArgs"
 
 switch_node 2
 send "coaps stop\n"
-expect "Done"
+expect_line "Done"
 
 switch_node 1
 send "coaps stop\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-coex.exp b/tests/scripts/expect/cli-coex.exp
index ca26b3793..9bfbfb6d4 100755
--- a/tests/scripts/expect/cli-coex.exp
+++ b/tests/scripts/expect/cli-coex.exp
@@ -32,15 +32,15 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "coex disable\n"
-expect "Done"
+expect_line "Done"
 send "coex\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "coex enable\n"
-expect "Done"
+expect_line "Done"
 send "coex\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 send "coex metrics\n"
 expect -re {Stopped: (true|false)}
 expect -re {Grant Glitch: \d+}
@@ -63,7 +63,7 @@ expect -re {    Grant Deactivated During Request: \d+}
 expect -re {    Delayed Grant: \d+}
 expect -re {    Average Request To Grant Time: \d+}
 expect -re {    Grant None: \d+}
-expect "Done"
+expect_line "Done"
 send "coex something_invalid\n"
 expect "Error 7: InvalidArgs"
 
diff --git a/tests/scripts/expect/cli-commissioner.exp b/tests/scripts/expect/cli-commissioner.exp
index f4b4e1606..1474d2f4b 100755
--- a/tests/scripts/expect/cli-commissioner.exp
+++ b/tests/scripts/expect/cli-commissioner.exp
@@ -35,46 +35,46 @@ setup_two_nodes
 set eui64 "d45e64fa83f81cf7"
 switch_node 1
 send "commissioner joiner add $eui64 J01NME\n"
-expect "Done"
+expect_line "Done"
 wait_for "netdata steeringdata check $eui64" "Done"
 send "commissioner joiner remove $eui64\n"
-expect "Done"
+expect_line "Done"
 wait_for "netdata steeringdata check $eui64" "NotFound"
 
 switch_node 2
 send "commissioner state\n"
 expect "disabled"
-expect "Done"
+expect_line "Done"
 send "commissioner start\n"
-expect "Done"
+expect_line "Done"
 expect "Commissioner: active"
 send "commissioner state\n"
 expect "active"
-expect "Done"
+expect_line "Done"
 send "commissioner provisioningurl openthread.io\n"
-expect "Done"
+expect_line "Done"
 send "commissioner joiner add * J01NME 1\n"
-expect "Done"
+expect_line "Done"
 send "commissioner joiner remove *\n"
-expect "Done"
+expect_line "Done"
 send "commissioner sessionid\n"
 expect "commissioner sessionid"
 expect -re {(\d+)}
 set sessionid $expect_out(1,string)
 send "commissioner mgmtset sessionid $sessionid steeringdata ffffffff joinerudpport 10001\n"
-expect "Done"
+expect_line "Done"
 send "commissioner mgmtset sessionid $sessionid locator 0x0100\n"
-expect "Done"
+expect_line "Done"
 send "commissioner mgmtget sessionid steeringdata joinerudpport locator binary 0b081209\n"
-expect "Done"
+expect_line "Done"
 send "commissioner stop\n"
 expect "Commissioner: disabled"
-expect "Done"
+expect_line "Done"
 send "commissioner state\n"
 expect "disabled"
-expect "Done"
+expect_line "Done"
 send "commissioner help\n"
-expect "Done"
+expect_line "Done"
 send "commissioner joiner something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "commissioner mgmtget something_invalid\n"
diff --git a/tests/scripts/expect/cli-counters.exp b/tests/scripts/expect/cli-counters.exp
index eda2de1f0..359d3b45f 100755
--- a/tests/scripts/expect/cli-counters.exp
+++ b/tests/scripts/expect/cli-counters.exp
@@ -34,15 +34,15 @@ spawn_node 1
 send "counters\n"
 expect "mac"
 expect "mle"
-expect "Done"
+expect_line "Done"
 send "counters mac\n"
-expect "Done"
+expect_line "Done"
 send "counters mle\n"
-expect "Done"
+expect_line "Done"
 send "counters mac reset\n"
-expect "Done"
+expect_line "Done"
 send "counters mle reset\n"
-expect "Done"
+expect_line "Done"
 send "counters mac 1\n"
 expect "Error 7: InvalidArgs"
 send "counters mle 1\n"
diff --git a/tests/scripts/expect/cli-dataset.exp b/tests/scripts/expect/cli-dataset.exp
index 259f9cfd2..5af33eba2 100755
--- a/tests/scripts/expect/cli-dataset.exp
+++ b/tests/scripts/expect/cli-dataset.exp
@@ -48,77 +48,77 @@ expect -re {Security Policy: \d+, o?n?r?c?b?}
 send "dataset pending\n"
 expect "Error 23: NotFound"
 send "dataset init active\n"
-expect "Done"
+expect_line "Done"
 send "dataset activetimestamp 100\n"
-expect "Done"
+expect_line "Done"
 send "dataset activetimestamp\n"
 expect "100"
-expect "Done"
+expect_line "Done"
 if {$channel == 11} {
     send "dataset channel 18\n"
-    expect "Done"
+    expect_line "Done"
     send "dataset channel\n"
     expect "18"
-    expect "Done"
+    expect_line "Done"
 } else {
     send "dataset channel 11\n"
-    expect "Done"
+    expect_line "Done"
     send "dataset channel\n"
     expect "11"
-    expect "Done"
+    expect_line "Done"
 }
 send "dataset channelmask 0x03fff800\n"
-expect "Done"
+expect_line "Done"
 send "dataset channelmask\n"
 expect "0x03fff800"
-expect "Done"
+expect_line "Done"
 send "dataset extpanid aabbccddeeff0011\n"
-expect "Done"
+expect_line "Done"
 send "dataset extpanid\n"
 expect "aabbccddeeff0011"
-expect "Done"
+expect_line "Done"
 send "dataset masterkey aabbccddeeff00112233445566778899\n"
-expect "Done"
+expect_line "Done"
 send "dataset masterkey\n"
 expect "aabbccddeeff00112233445566778899"
-expect "Done"
+expect_line "Done"
 send "dataset meshlocalprefix fdde:4860::\n"
-expect "Done"
+expect_line "Done"
 send "dataset meshlocalprefix\n"
 expect "fdde:4860:0:0::/64"
-expect "Done"
+expect_line "Done"
 send "dataset networkname OT-network\n"
-expect "Done"
+expect_line "Done"
 send "dataset networkname\n"
 expect "OT-network"
-expect "Done"
+expect_line "Done"
 send "dataset panid 0xface\n"
-expect "Done"
+expect_line "Done"
 send "dataset panid\n"
 expect "0xface"
-expect "Done"
+expect_line "Done"
 send "dataset pskc 00112233445566778899aabbccddeeff\n"
-expect "Done"
+expect_line "Done"
 send "dataset pskc\n"
 expect "00112233445566778899aabbccddeeff"
-expect "Done"
+expect_line "Done"
 send "dataset securitypolicy 678 onrcb\n"
-expect "Done"
+expect_line "Done"
 send "dataset securitypolicy\n"
 expect "678 onrcb"
-expect "Done"
+expect_line "Done"
 send "dataset pendingtimestamp 100\n"
-expect "Done"
+expect_line "Done"
 send "dataset pendingtimestamp\n"
 expect "100"
-expect "Done"
+expect_line "Done"
 send "dataset delay 30000\n"
-expect "Done"
+expect_line "Done"
 send "dataset delay\n"
 expect "30000"
-expect "Done"
+expect_line "Done"
 send "dataset commit pending\n"
-expect "Done"
+expect_line "Done"
 send "dataset pending\n"
 expect "Pending Timestamp: 100"
 expect "Active Timestamp: 100"
@@ -136,13 +136,13 @@ expect "Network Name: OT-network"
 expect "PAN ID: 0xface"
 expect "PSKc: 00112233445566778899aabbccddeeff"
 expect "Security Policy: 678, onrcb"
-expect "Done"
+expect_line "Done"
 
 sleep 30
 
 switch_node 2
 wait_for "dataset active" "Active Timestamp: 100"
-expect "Done"
+expect_line "Done"
 send "dataset active\n"
 expect "Active Timestamp: 100"
 if {$channel == 11} {
@@ -158,11 +158,11 @@ expect "Network Name: OT-network"
 expect "PAN ID: 0xface"
 expect "PSKc: 00112233445566778899aabbccddeeff"
 expect "Security Policy: 678, onrcb"
-expect "Done"
+expect_line "Done"
 send "dataset clear\n"
-expect "Done"
+expect_line "Done"
 send "dataset init active\n"
-expect "Done"
+expect_line "Done"
 send "dataset\n"
 expect "Active Timestamp: 100"
 if {$channel == 11} {
@@ -178,16 +178,12 @@ expect "Network Name: OT-network"
 expect "PAN ID: 0xface"
 expect "PSKc: 00112233445566778899aabbccddeeff"
 expect "Security Policy: 678, onrcb"
-expect "Done"
+expect_line "Done"
 send "dataset init pending\n"
 expect "Error 23: NotFound"
 
 switch_node 1
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
-expect "Done"
+set addr [get_ipaddr mleid]
 
 switch_node 2
 send "dataset mgmtgetcommand active \
@@ -195,60 +191,60 @@ activetimestamp pendingtimestamp masterkey networkname extpanid \
 localprefix delaytimer panid channel \
 -x 000102030405060708090a0b0e0f0c333435 \
 address $addr\n"
-expect "Done"
+expect_line "Done"
 send "dataset mgmtgetcommand pending \
 activetimestamp pendingtimestamp masterkey networkname extpanid \
 localprefix delaytimer panid channel \
 -x 000102030405060708090a0b0e0f0c333435 \
 address $addr\n"
-expect "Done"
+expect_line "Done"
 
 switch_node 1
 send "dataset init active\n"
-expect "Done"
+expect_line "Done"
 send "dataset networkname Thread\\ 网络\n"
-expect "Done"
+expect_line "Done"
 send "dataset commit active\n"
-expect "Done"
+expect_line "Done"
 send "dataset active -x\n"
 expect "54687265616420e7bd91e7bb9c" ;# UTF-8 of "Thread 网络"
-expect "Done"
+expect_line "Done"
 send "dataset active -x\n"
 expect "dataset active -x"
 expect -re {([0-9a-f]+)[\r\n]+Done}
 set binary $expect_out(1,string)
 send "dataset set pending $binary\n"
-expect "Done"
+expect_line "Done"
 send "dataset pending -x\n"
 expect $binary
-expect "Done"
+expect_line "Done"
 send "dataset pending\n"
 expect "Network Name: Thread 网络"
-expect "Done"
+expect_line "Done"
 send "dataset set active $binary\n"
-expect "Done"
+expect_line "Done"
 send "dataset mgmtsetcommand active activetimestamp 200 -x 030d54687265616420e7bd91e7bb9c\n"
-expect "Done"
+expect_line "Done"
 send "dataset active\n"
 expect "Network Name: Thread 网络"
-expect "Done"
+expect_line "Done"
 send "dataset mgmtsetcommand active activetimestamp 210 -x 0301ff\n"
-expect "Done"
+expect_line "Done"
 send "dataset active\n"
 expect "Active Timestamp: 200"
 expect "Network Name: Thread 网络"
-expect "Done"
+expect_line "Done"
 send "dataset set active 03023432\n"
-expect "Done"
+expect_line "Done"
 send "dataset active\n"
 expect "Network Name: 42"
-expect "Done"
+expect_line "Done"
 send "dataset set active 0301bf\n"
 expect "Error 7: InvalidArgs"
 send "dataset help\n"
-expect "Done"
+expect_line "Done"
 send "dataset\n"
-expect "Done"
+expect_line "Done"
 send "dataset init something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "dataset active something_invalid\n"
@@ -266,7 +262,7 @@ expect "Error 7: InvalidArgs"
 send "dataset mgmtgetcommand active something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "dataset pskc -p 123456\n"
-expect "Done"
+expect_line "Done"
 send "dataset securitypolicy 678 something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "dataset set something_invalid 00\n"
diff --git a/tests/scripts/expect/cli-discerner.exp b/tests/scripts/expect/cli-discerner.exp
index 64f422ba7..07a9e413a 100755
--- a/tests/scripts/expect/cli-discerner.exp
+++ b/tests/scripts/expect/cli-discerner.exp
@@ -44,27 +44,27 @@ expect "InvalidArgs"
 send "netdata steeringdata check $discerner\n"
 expect "InvalidState"
 send "commissioner start\n"
-expect "Done"
+expect_line "Done"
 expect "Commissioner: active"
 send "commissioner joiner add 1/0 $pskd\n"
 expect "InvalidArgs"
 send "netdata steeringdata check 0xabc/12\n"
 expect "NotFound"
 send "commissioner joiner add $discerner $pskd\n"
-expect "Done"
+expect_line "Done"
 wait_for "netdata steeringdata check $discerner" "Done"
 send "commissioner joiner remove $discerner\n"
-expect "Done"
+expect_line "Done"
 wait_for "netdata steeringdata check $discerner" "NotFound"
 send "commissioner joiner add $discerner $pskd\n"
-expect "Done"
+expect_line "Done"
 
 spawn_node 2
 
 send "mode r\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "joiner discerner\n"
 expect "NotFound"
 send "joiner discerner 1/1 2\n"
@@ -82,18 +82,18 @@ expect "InvalidArgs"
 send "joiner discerner invalid/20\n"
 expect "InvalidArgs"
 send "joiner discerner clear\n"
-expect "Done"
+expect_line "Done"
 send "joiner discerner $discerner\n"
-expect "Done"
+expect_line "Done"
 send "joiner discerner\n"
 expect "$discerner"
-expect "Done"
+expect_line "Done"
 send "joiner start $pskd\n"
-expect "Done"
+expect_line "Done"
 wait_for "" "Join success" "Join failed"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "child"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-extaddr.exp b/tests/scripts/expect/cli-extaddr.exp
index a4fc42de6..ca48271a8 100755
--- a/tests/scripts/expect/cli-extaddr.exp
+++ b/tests/scripts/expect/cli-extaddr.exp
@@ -32,9 +32,9 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "extaddr 99aabbccddeeff00\n"
-expect "Done"
+expect_line "Done"
 send "extaddr 99AABBCCDDEEFF00\n"
-expect "Done"
+expect_line "Done"
 send "extaddr\n"
 expect "99aabbccddeeff00"
 send "extaddr 1\n"
diff --git a/tests/scripts/expect/cli-ipmaddr.exp b/tests/scripts/expect/cli-ipmaddr.exp
index 5084ca2ba..a4e324f0c 100755
--- a/tests/scripts/expect/cli-ipmaddr.exp
+++ b/tests/scripts/expect/cli-ipmaddr.exp
@@ -34,35 +34,32 @@ setup_two_nodes
 
 switch_node 1
 send "ipmaddr add ff0e::1\n"
-expect "Done"
+expect_line "Done"
 send "ipmaddr\n"
 expect "ff0e:0:0:0:0:0:0:1"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
+expect_line "Done"
+set addr [get_ipaddr mleid]
 
 switch_node 2
 send "ping ff0e::1\n"
-expect "Done"
+expect_line "Done"
 expect "16 bytes from $addr: icmp_seq=1"
 
 switch_node 1
 send "ipmaddr del ff0e::1\n"
-expect "Done"
+expect_line "Done"
 send "ipmaddr del ff0e::1\n"
 expect "Error 23: NotFound"
 send "ipmaddr promiscuous enable\n"
-expect "Done"
+expect_line "Done"
 send "ipmaddr promiscuous\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 send "ipmaddr promiscuous disable\n"
-expect "Done"
+expect_line "Done"
 send "ipmaddr promiscuous\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "ipmaddr something_invalid\n"
 expect "Error 35: InvalidCommand"
 
diff --git a/tests/scripts/expect/cli-log-level.exp b/tests/scripts/expect/cli-log-level.exp
index c7685fcac..8544d5a2d 100755
--- a/tests/scripts/expect/cli-log-level.exp
+++ b/tests/scripts/expect/cli-log-level.exp
@@ -33,12 +33,12 @@ spawn_node 1
 
 send "log level\n"
 expect -re {\d}
-expect "Done"
+expect_line "Done"
 send "log level 5\n"
-expect "Done"
+expect_line "Done"
 send "log level\n"
 expect "5"
-expect "Done"
+expect_line "Done"
 send "log level -1\n"
 expect "Error 7: InvalidArgs"
 send "log level 6\n"
diff --git a/tests/scripts/expect/cli-mac.exp b/tests/scripts/expect/cli-mac.exp
index 0d6865dd5..0d3054410 100755
--- a/tests/scripts/expect/cli-mac.exp
+++ b/tests/scripts/expect/cli-mac.exp
@@ -32,16 +32,16 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "mac retries direct 5\n"
-expect "Done"
+expect_line "Done"
 send "mac retries direct\n"
 expect "5"
-expect "Done"
+expect_line "Done"
 
 send "mac retries indirect 2\n"
-expect "Done"
+expect_line "Done"
 send "mac retries indirect\n"
 expect "2"
-expect "Done"
+expect_line "Done"
 
 send "mac\n"
 expect "Error 7: InvalidArgs"
diff --git a/tests/scripts/expect/cli-macfilter.exp b/tests/scripts/expect/cli-macfilter.exp
index 5892b831c..21456b35a 100755
--- a/tests/scripts/expect/cli-macfilter.exp
+++ b/tests/scripts/expect/cli-macfilter.exp
@@ -34,108 +34,108 @@ spawn_node 1
 send "macfilter\n"
 expect "Address Mode: Disabled"
 expect "RssIn List:"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr add aabbccddeeff0011\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr\n"
 expect "Disabled"
 expect "aabbccddeeff0011"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr allowlist\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr\n"
 expect "Allowlist"
 expect "aabbccddeeff0011"
-expect "Done"
+expect_line "Done"
 
 send "macfilter\n"
 expect "Address Mode: Allowlist"
 expect "aabbccddeeff0011"
 expect "RssIn List:"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr add 2233445566778899\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr remove aabbccddeeff0011\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr denylist\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr\n"
 expect "Denylist"
 expect "2233445566778899"
-expect "Done"
+expect_line "Done"
 
 send "macfilter\n"
 expect "Address Mode: Denylist"
 expect "2233445566778899"
 expect "RssIn List:"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr clear\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr disable\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 
 send "macfilter\n"
 expect "Address Mode: Disabled"
 expect "RssIn List:"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr something_invalid\n"
 expect "Error 35: InvalidCommand"
 
 send "macfilter rss\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss add-lqi * 2\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss add-lqi aabbccddeeff0011 3\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss\n"
 expect -re {aabbccddeeff0011 : rss -?\d+ \(lqi 3\)}
 expect -re {Default rss: -?\d+ \(lqi 2\)}
-expect "Done"
+expect_line "Done"
 
 send "macfilter\n"
 expect "Address Mode: Disabled"
 expect "RssIn List:"
 expect -re {aabbccddeeff0011 : rss -?\d+ \(lqi 3\)}
 expect -re {Default rss : -?\d+ \(lqi 2\)}
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss remove *\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss remove aabbccddeeff0011\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss add 2233445566778899 -70\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss add * -80\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss\n"
 expect -re {2233445566778899 : rss -70 \(lqi \d\)}
 expect -re {Default rss: -80 \(lqi \d\)}
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss clear\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter rss something_invalid\n"
 expect "Error 35: InvalidCommand"
diff --git a/tests/scripts/expect/cli-misc.exp b/tests/scripts/expect/cli-misc.exp
index 65992bb19..98651e8b5 100755
--- a/tests/scripts/expect/cli-misc.exp
+++ b/tests/scripts/expect/cli-misc.exp
@@ -40,129 +40,129 @@ expect -re {Weighting: \d+}
 expect -re {Data Version: \d+}
 expect -re {Stable Data Version: \d+}
 expect -re {Leader Router ID: \d+}
-expect "Done"
+expect_line "Done"
 
 send "help\n"
-expect "Done"
+expect_line "Done"
 
 send "bufferinfo\n"
-expect "Done"
+expect_line "Done"
 
 send "ccathreshold -62\n"
-expect "Done"
+expect_line "Done"
 send "ccathreshold\n"
 expect -- "-62 dBm"
-expect "Done"
+expect_line "Done"
 
 send "parent\n"
-expect "Done"
+expect_line "Done"
 
 send "delaytimermin 1\n"
-expect "Done"
+expect_line "Done"
 send "delaytimermin\n"
 expect "1"
-expect "Done"
+expect_line "Done"
 send "delaytimermin 1 2\n"
 send "counters mac 1\n"
 expect "Error 7: InvalidArgs"
 
 send "fem lnagain 11\n"
-expect "Done"
+expect_line "Done"
 send "fem lnagain\n"
 expect -- "11"
-expect "Done"
+expect_line "Done"
 send "fem\n"
 expect -- "LNA gain 11 dBm"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig down\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig\n"
 expect "down"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig\n"
 expect "up"
-expect "Done"
+expect_line "Done"
 
 send "ipaddr add ::\n"
-expect "Done"
+expect_line "Done"
 send "ipaddr del ::\n"
-expect "Done"
+expect_line "Done"
 
 send "leaderweight 1\n"
-expect "Done"
+expect_line "Done"
 send "leaderweight\n"
 expect "1"
-expect "Done"
+expect_line "Done"
 
 send "mode rdn\n"
-expect "Done"
+expect_line "Done"
 send "mode\n"
 expect -re "(?=.*r)(?=.*d)(?=.*n)"
 
 send "parent\n"
-expect "Done"
+expect_line "Done"
 
 send "singleton\n"
 expect -re "true|false"
-expect "Done"
+expect_line "Done"
 
 send "state\n"
 expect "disabled"
-expect "Done"
+expect_line "Done"
 
 send "txpower -10\n"
-expect "Done"
+expect_line "Done"
 send "txpower\n"
 expect -- "-10 dBm"
-expect "Done"
+expect_line "Done"
 
 send "thread version\n"
-expect "Done"
+expect_line "Done"
 
 send "version\n"
-expect "Done"
+expect_line "Done"
 send "version api\n"
 expect -re {\d+}
-expect "Done"
+expect_line "Done"
 send "version something_invalid\n"
 expect "Error 35: InvalidCommand"
 
 send "joinerport 10001\n"
-expect "Done"
+expect_line "Done"
 send "joinerport\n"
 expect "10001"
-expect "Done"
+expect_line "Done"
 
 send "parentpriority 1\n"
-expect "Done"
+expect_line "Done"
 send "parentpriority\n"
 expect "1"
-expect "Done"
+expect_line "Done"
 
 send "pollperiod 100000\n"
-expect "Done"
+expect_line "Done"
 send "pollperiod\n"
 expect "100000"
-expect "Done"
+expect_line "Done"
 
 send "prefix add ::/64 low pdcrosn\n"
-expect "Done"
+expect_line "Done"
 send "prefix\n"
 expect "0:0:0:0::/64 pdcrosn low"
-expect "Done"
+expect_line "Done"
 
 send "preferrouterid 1\n"
-expect "Done"
+expect_line "Done"
 
 send "route add ::/64 s low\n"
-expect "Done"
+expect_line "Done"
 send "route\n"
 expect "0:0:0:0::/64 s low"
 send "route remove ::/64\n"
-expect "Done"
+expect_line "Done"
 
 send "diag start\n"
 expect ": InvalidState"
diff --git a/tests/scripts/expect/cli-multicast-loop.exp b/tests/scripts/expect/cli-multicast-loop.exp
index 4d84adeb1..ef6c8b68b 100755
--- a/tests/scripts/expect/cli-multicast-loop.exp
+++ b/tests/scripts/expect/cli-multicast-loop.exp
@@ -42,16 +42,16 @@ setup_default_network
 set timeout 1
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 set extaddr1 [get_extaddr]
 
@@ -61,16 +61,16 @@ spawn_node 2 cli
 setup_default_network
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "router"
-expect "Done"
+expect_line "Done"
 sleep 3
 
 get_rloc16
@@ -79,22 +79,22 @@ spawn_node 3 cli
 setup_default_network
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr add ${extaddr1}\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr denylist\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "router"
-expect "Done"
+expect_line "Done"
 sleep 4
 
 set extaddr3 [get_extaddr]
@@ -105,25 +105,25 @@ spawn_node 4 cli
 setup_default_network
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 
 send "mode rn\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr add ${extaddr3}\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr allowlist\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "child"
-expect "Done"
+expect_line "Done"
 
 get_rloc16
 
@@ -133,7 +133,7 @@ set rloc(1) [get_ipaddr "rloc"]
 
 send "networkdiagnostic get ff03::2 5 16\n"
 expect "DIAG_GET.rsp/ans from $rloc(1)"
-expect "Done"
+expect_line "Done"
 
 sleep 5
 
diff --git a/tests/scripts/expect/cli-neighbor.exp b/tests/scripts/expect/cli-neighbor.exp
index 4af05a272..9f5dd9e5f 100755
--- a/tests/scripts/expect/cli-neighbor.exp
+++ b/tests/scripts/expect/cli-neighbor.exp
@@ -33,26 +33,18 @@ source "tests/scripts/expect/_multinode.exp"
 setup_two_nodes
 
 switch_node 2
-send "rloc16\n"
-expect "rloc16"
-expect -re {([0-9a-f]{4})}
-set rloc $expect_out(1,string)
-expect "Done"
-send "extaddr\n"
-expect "extaddr"
-expect -re {([0-9a-f]{16})}
-set extaddr $expect_out(1,string)
-expect "Done"
+set rloc [get_rloc16]
+set extaddr [get_extaddr]
 
 switch_node 1
 send "neighbor table\n"
 expect "| Role | RLOC16 | Age | Avg RSSI | Last RSSI |R|D|N| Extended MAC     |"
 expect "+------+--------+-----+----------+-----------+-+-+-+------------------+"
 expect -re "\\| +C +\\| 0x$rloc \\| +\\d+ \\| +-?\\d+ \\| +-?\\d+ \\|1\\|0\\|0\\| $extaddr \\|"
-expect "Done"
+expect_line "Done"
 send "neighbor list\n"
 expect "0x$rloc"
-expect "Done"
+expect_line "Done"
 send "neighbor something_invalid\n"
 expect "Error 7: InvalidArgs"
 
diff --git a/tests/scripts/expect/cli-netdata.exp b/tests/scripts/expect/cli-netdata.exp
index faf65377c..ff2d62cff 100755
--- a/tests/scripts/expect/cli-netdata.exp
+++ b/tests/scripts/expect/cli-netdata.exp
@@ -35,15 +35,15 @@ setup_two_nodes
 switch_node 1
 
 send "netdata help\n"
-expect "Done"
+expect_line "Done"
 
 send "netdata register\n"
-expect "Done"
+expect_line "Done"
 
 send "netdata show\n"
-expect "Done"
+expect_line "Done"
 
 send "netdata show -x\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-networkname.exp b/tests/scripts/expect/cli-networkname.exp
index 2b0ce3e70..20c09c668 100755
--- a/tests/scripts/expect/cli-networkname.exp
+++ b/tests/scripts/expect/cli-networkname.exp
@@ -34,47 +34,47 @@ spawn_node 2
 
 switch_node 1
 send "networkname Thread\\ Network\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "scan\n"
 expect "Thread Network"
-expect "Done"
+expect_line "Done"
 
 switch_node 1
 send "thread stop\n"
-expect "Done"
+expect_line "Done"
 send "networkname Thread\\ 网络\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "scan\n"
 expect "Thread 网络"
-expect "Done"
+expect_line "Done"
 
 switch_node 1
 send "thread stop\n"
-expect "Done"
+expect_line "Done"
 send "networkname スレッド\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "scan\n"
 expect "スレッド"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-partitionid.exp b/tests/scripts/expect/cli-partitionid.exp
old mode 100644
new mode 100755
index e2e0b6039..18a5efa00
--- a/tests/scripts/expect/cli-partitionid.exp
+++ b/tests/scripts/expect/cli-partitionid.exp
@@ -32,14 +32,14 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "partitionid preferred 12345678\n"
-expect "Done"
+expect_line "Done"
 send "partitionid preferred\n"
 expect "12345678"
-expect "Done"
+expect_line "Done"
 send "partitionid invalid\n"
 expect "Error 35: InvalidCommand"
 send "partitionid\n"
 expect "0"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-ping.exp b/tests/scripts/expect/cli-ping.exp
index 1e615ff57..db24d4728 100755
--- a/tests/scripts/expect/cli-ping.exp
+++ b/tests/scripts/expect/cli-ping.exp
@@ -34,13 +34,13 @@ source "tests/scripts/expect/_multinode.exp"
 spawn_node 1
 
 send "ping ::1 1 2 1 1\n"
-expect "Done"
+expect_line "Done"
 send "ping stop\n"
-expect "Done"
+expect_line "Done"
 send "ping ::1 1 2 0.12345 1\n"
-expect "Done"
+expect_line "Done"
 send "ping stop\n"
-expect "Done"
+expect_line "Done"
 send "ping ::1 1 2 1 1 1\n"
 expect "Error 7: InvalidArgs"
 
@@ -50,11 +50,7 @@ dispose_all
 setup_two_nodes
 
 switch_node 2
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
-expect "Done"
+set addr [get_ipaddr mleid]
 
 switch_node 1
 send "ping $addr\n"
diff --git a/tests/scripts/expect/cli-promiscuous.exp b/tests/scripts/expect/cli-promiscuous.exp
index c2fcf78ce..61acf4987 100755
--- a/tests/scripts/expect/cli-promiscuous.exp
+++ b/tests/scripts/expect/cli-promiscuous.exp
@@ -35,14 +35,14 @@ spawn_node 1
 
 send "promiscuous\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "promiscuous enable\n"
-expect "Done"
+expect_line "Done"
 send "promiscuous\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 send "promiscuous disable\n"
-expect "Done"
+expect_line "Done"
 send "promiscuous a\n"
 expect "Error 7: InvalidArgs"
 
@@ -56,19 +56,19 @@ send "channel\n"
 expect "channel"
 expect -re {(\d+)}
 set channel $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 
 spawn_node 3
 send "channel $channel\n"
-expect "Done"
+expect_line "Done"
 send "promiscuous enable\n"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "ipaddr\n"
 expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
 set addr $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 
 switch_node 1
 send "ping $addr\n"
@@ -79,6 +79,6 @@ expect -re {============================================\[len = +\d+]===========
 expect -re {\|( ([0-9A-Z]{2}|\.\.)){16}\|( .){16}\|}
 expect -- "-----------------------------------------------------------------------------------"
 send "promiscuous disable\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-pskc.exp b/tests/scripts/expect/cli-pskc.exp
index 1d211fd98..f4de844d1 100755
--- a/tests/scripts/expect/cli-pskc.exp
+++ b/tests/scripts/expect/cli-pskc.exp
@@ -32,21 +32,21 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "pskc 00112233445566778899aabbccddeeff\n"
-expect "Done"
+expect_line "Done"
 send "pskc\n"
 expect "00112233445566778899aabbccddeeff"
-expect "Done"
+expect_line "Done"
 send "factoryreset\n"
 sleep 0.1
 send "networkname Test\\ Network\n"
-expect "Done"
+expect_line "Done"
 send "extpanid 0001020304050607\n"
-expect "Done"
+expect_line "Done"
 send "pskc -p 12SECRETPASSWORD34\n"
-expect "Done"
+expect_line "Done"
 send "pskc\n"
 expect "c3f59368445a1b6106be420a706d4cc9"
-expect "Done"
+expect_line "Done"
 send "factoryreset\n"
 sleep 0.1
 send "pskc -x\n"
diff --git a/tests/scripts/expect/cli-region.exp b/tests/scripts/expect/cli-region.exp
index b1dc44655..3c75c40ab 100755
--- a/tests/scripts/expect/cli-region.exp
+++ b/tests/scripts/expect/cli-region.exp
@@ -32,9 +32,9 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "region\n"
-expect "Done"
+expect_line "Done"
 send "region US\n"
-expect "Done"
+expect_line "Done"
 send "region\n"
 expect "US"
-expect "Done"
+expect_line "Done"
diff --git a/tests/scripts/expect/cli-reset.exp b/tests/scripts/expect/cli-reset.exp
index d432d3320..dc2944160 100755
--- a/tests/scripts/expect/cli-reset.exp
+++ b/tests/scripts/expect/cli-reset.exp
@@ -32,11 +32,11 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "panid 0xabcd\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 sleep 3
 
@@ -45,24 +45,24 @@ sleep 3
 
 send "ifconfig\n"
 expect "down"
-expect "Done"
+expect_line "Done"
 send "panid\n"
 expect "0xabcd"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 send "factoryreset\n"
 sleep 3
 
 send "ifconfig\n"
 expect "down"
-expect "Done"
+expect_line "Done"
 send "panid\n"
 expect "0xffff"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-router.exp b/tests/scripts/expect/cli-router.exp
index 028476da0..b7f1a56dd 100755
--- a/tests/scripts/expect/cli-router.exp
+++ b/tests/scripts/expect/cli-router.exp
@@ -33,37 +33,33 @@ source "tests/scripts/expect/_multinode.exp"
 setup_two_nodes
 
 switch_node 1
-send "extaddr\n"
-expect "extaddr"
-expect -re {([0-9a-f]{16})}
-set extaddr $expect_out(1,string)
-expect "Done"
+set extaddr [get_extaddr]
 send "router list\n"
 expect "router list"
 expect -re {(\d+)}
 set router_id $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "router $router_id\n"
 expect -re {Rloc: ([0-9a-f]{4})}
 set rloc $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "router table\n"
 expect "| ID | RLOC16 | Next Hop | Path Cost | LQ In | LQ Out | Age | Extended MAC     |"
 expect "+----+--------+----------+-----------+-------+--------+-----+------------------+"
 expect -re "\\| +$router_id \\| 0x$rloc \\| +\\d+ \\| +\\d+ \\| +\\d+ \\| +\\d+ \\| +\\d+ \\| $extaddr \\|"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 send "mode rdn\n"
-expect "Done"
+expect_line "Done"
 send "state router\n"
-expect "Done"
+expect_line "Done"
 wait_for "router list" $router_id
 send "router $router_id\n"
 expect "Router ID: $router_id"
 expect "Rloc: $rloc"
 expect -re {Next Hop: [0-9a-f]{4}}
 expect -re {Link: [01]}
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/cli-routereligible.exp b/tests/scripts/expect/cli-routereligible.exp
index f18a3d115..821b1272b 100755
--- a/tests/scripts/expect/cli-routereligible.exp
+++ b/tests/scripts/expect/cli-routereligible.exp
@@ -32,22 +32,22 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "routereligible disable\n"
-expect "Done"
+expect_line "Done"
 send "routereligible\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "routereligible enable\n"
-expect "Done"
+expect_line "Done"
 send "routereligible\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 send "routereligible something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "mode r\n"
-expect "Done"
+expect_line "Done"
 send "routereligible\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "routereligible enable\n"
 expect "Error 27: NotCapable"
 
diff --git a/tests/scripts/expect/cli-scan-discover.exp b/tests/scripts/expect/cli-scan-discover.exp
index fd9061ee4..812b88298 100755
--- a/tests/scripts/expect/cli-scan-discover.exp
+++ b/tests/scripts/expect/cli-scan-discover.exp
@@ -35,32 +35,28 @@ setup_two_nodes
 spawn_node 3
 
 switch_node 1
-send "extaddr\n"
-expect "extaddr"
-expect -re {([0-9a-f]{16})}
-set extaddr $expect_out(1,string)
-expect "Done"
+set extaddr [get_extaddr]
 send "panid\n"
 expect "panid"
 expect -re {([0-9a-f]{4})}
 set pan $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "extpanid\n"
 expect "extpanid"
 expect -re {([0-9a-f]{16})}
 set extpan $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 expect "> "
 send "networkname\n"
 expect "networkname"
 expect -re {[\r\n]([^\r\n]+?)[\r\n]}
 set network $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "channel\n"
 expect "channel"
 expect -re {(\d+)}
 set channel $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 
 switch_node 3
 send "scan $channel\n"
@@ -74,16 +70,16 @@ expect "+----+------+"
 for {set i 11} {$i <= 26} {incr i} {
     expect -re "\\| +$i \\| +-?\\d+ \\|"
 }
-expect "Done"
+expect_line "Done"
 send "scan energy 100 $channel\n"
 expect "| Ch | RSSI |"
 expect "+----+------+"
 expect -re "\\| +$channel \\| +-?\\d+ \\|"
-expect "Done"
+expect_line "Done"
 
 switch_node 3
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "discover $channel\n"
 expect "| J | Network Name     | Extended PAN     | PAN  | MAC Address      | Ch | dBm | LQI |"
 expect "+---+------------------+------------------+------+------------------+----+-----+-----+"
diff --git a/tests/scripts/expect/cli-udp.exp b/tests/scripts/expect/cli-udp.exp
index e55b45838..2a78f7ed9 100755
--- a/tests/scripts/expect/cli-udp.exp
+++ b/tests/scripts/expect/cli-udp.exp
@@ -34,31 +34,25 @@ setup_two_nodes
 
 switch_node 2
 send "udp open\n"
-expect "Done"
+expect_line "Done"
 send "udp bind :: 11001\n"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_2 $expect_out(1,string)
+expect_line "Done"
+set addr_2 [get_ipaddr mleid]
 
 switch_node 1
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr_1 $expect_out(1,string)
+set addr_1 [get_ipaddr mleid]
 send "udp open\n"
-expect "Done"
+expect_line "Done"
 send "udp bind :: 11002\n"
-expect "Done"
+expect_line "Done"
 send "udp connect $addr_2 11001\n"
-expect "Done"
+expect_line "Done"
 send "udp send -s 10\n"
-expect "Done"
+expect_line "Done"
 send "udp send -x a68656c6c6f\n"
-expect "Done"
+expect_line "Done"
 send "udp send -t there\n"
-expect "Done"
+expect_line "Done"
 
 switch_node 2
 expect "10 bytes from $addr_1 11002 0123456789"
@@ -68,7 +62,7 @@ expect "5 bytes from $addr_1 11002 there"
 
 switch_node 1
 send "udp help\n"
-expect "Done"
+expect_line "Done"
 send "udp connect something_invalid\n"
 expect "Error 7: InvalidArgs"
 send "udp send -x something_invalid\n"
@@ -78,17 +72,17 @@ expect "Error 7: InvalidArgs"
 
 send "udp linksecurity\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 send "udp linksecurity disable\n"
-expect "Done"
+expect_line "Done"
 send "udp linksecurity\n"
 expect "Disabled"
-expect "Done"
+expect_line "Done"
 send "udp linksecurity enable\n"
-expect "Done"
+expect_line "Done"
 send "udp linksecurity\n"
 expect "Enabled"
-expect "Done"
+expect_line "Done"
 
 send "udp linksecurity something_invalid\n"
 expect "Error 35: InvalidCommand"
diff --git a/tests/scripts/expect/cli-unsecure-port.exp b/tests/scripts/expect/cli-unsecure-port.exp
index bf99d9783..51c36d433 100755
--- a/tests/scripts/expect/cli-unsecure-port.exp
+++ b/tests/scripts/expect/cli-unsecure-port.exp
@@ -32,33 +32,33 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "unsecureport remove all\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport get\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport add 123\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport add 456\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport get\n"
 expect "123 456"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport remove 123\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport get\n"
 expect "456"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport remove all\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport get\n"
-expect "Done"
+expect_line "Done"
 
 send "unsecureport invalid_command\n"
 expect "Error 35: InvalidCommand"
diff --git a/tests/scripts/expect/posix-ccathreshold.exp b/tests/scripts/expect/posix-ccathreshold.exp
index 34e4d966c..0ea5d7cb1 100755
--- a/tests/scripts/expect/posix-ccathreshold.exp
+++ b/tests/scripts/expect/posix-ccathreshold.exp
@@ -27,13 +27,15 @@
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 
+source "tests/scripts/expect/_common.exp"
+
 spawn $env(OT_POSIX_APPS)/ot-cli "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?forkpty-arg=1&cca-threshold=-100"
 expect_after {
     timeout { exit 1 }
 }
 send "ccathreshold\n"
 expect -- "-100"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 
@@ -43,7 +45,7 @@ expect_after {
 }
 send "ccathreshold\n"
 expect -- "-128"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 
@@ -53,7 +55,7 @@ expect_after {
 }
 send "ccathreshold\n"
 expect "127"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 
diff --git a/tests/scripts/expect/posix-diag-rcp.exp b/tests/scripts/expect/posix-diag-rcp.exp
index e933922f2..2e4732e83 100755
--- a/tests/scripts/expect/posix-diag-rcp.exp
+++ b/tests/scripts/expect/posix-diag-rcp.exp
@@ -33,25 +33,25 @@ spawn_node 1
 
 send "diag rcp\n"
 expect "diagnostics mode is disabled"
-expect "Done"
+expect_line "Done"
 send "diag start\n"
 expect "start diagnostics mode"
 expect "status 0x00"
-expect "Done"
+expect_line "Done"
 send "diag rcp\n"
 expect "diagnostics mode is enabled"
-expect "Done"
+expect_line "Done"
 send "diag rcp channel\n"
 expect "failed"
 expect "status 0x7"
-expect "Done"
+expect_line "Done"
 send "diag rcp channel 11\n"
-expect "Done"
+expect_line "Done"
 send "diag rcp power\n"
 expect "failed"
 expect "status 0x7"
-expect "Done"
+expect_line "Done"
 send "diag rcp power 10\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/posix-fem-lnagain.exp b/tests/scripts/expect/posix-fem-lnagain.exp
index 77adfaa4c..f157c2493 100755
--- a/tests/scripts/expect/posix-fem-lnagain.exp
+++ b/tests/scripts/expect/posix-fem-lnagain.exp
@@ -27,13 +27,15 @@
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 
+source "tests/scripts/expect/_common.exp"
+
 spawn $env(OT_POSIX_APPS)/ot-cli "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?forkpty-arg=1&fem-lnagain=10"
 expect_after {
     timeout { exit 1 }
 }
 send "fem lnagain\n"
 expect "10"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 
@@ -43,7 +45,7 @@ expect_after {
 }
 send "fem lnagain\n"
 expect -- "-128"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 
diff --git a/tests/scripts/expect/posix-max-power-table.exp b/tests/scripts/expect/posix-max-power-table.exp
index 733edfb34..86d3a0f14 100755
--- a/tests/scripts/expect/posix-max-power-table.exp
+++ b/tests/scripts/expect/posix-max-power-table.exp
@@ -33,24 +33,24 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1 "rcp" "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?max-power-table=11,12,13,14,15,16,17,18,19,20,21,22,23,24,-1,0x7f&forkpty-arg=1"
 send "channel supported\n"
 expect "0x3fff800"
-expect "Done"
+expect_line "Done"
 send "channel preferred\n"
 expect "0x3fff800"
-expect "Done"
+expect_line "Done"
 send "txpower 20\n"
-expect "Done"
+expect_line "Done"
 send "txpower\n"
 expect "11 dBm"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
 # allows all channels by default
 spawn_node 1 "rcp" "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?forkpty-arg=1"
 send "channel supported\n"
 expect "0x7fff800"
-expect "Done"
+expect_line "Done"
 send "channel preferred\n"
 expect "0x7fff800"
-expect "Done"
+expect_line "Done"
 send "\x04"
 expect eof
diff --git a/tests/scripts/expect/posix-rcp-restoration.exp b/tests/scripts/expect/posix-rcp-restoration.exp
index b163897e5..25c23f4c6 100755
--- a/tests/scripts/expect/posix-rcp-restoration.exp
+++ b/tests/scripts/expect/posix-rcp-restoration.exp
@@ -70,36 +70,28 @@ try {
     setup_two_nodes "-" false
 
     switch_node 2
-    send "ipaddr mleid\n"
-    expect "ipaddr mleid"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set addr_2 $expect_out(1,string)
-    expect "Done"
+    set addr_2 [get_ipaddr mleid]
     send "udp open\n"
-    expect "Done"
+    expect_line "Done"
     send "udp bind :: 11003\n"
-    expect "Done"
+    expect_line "Done"
     send "pollperiod 100000\n"
-    expect "Done"
+    expect_line "Done"
 
     sleep 1
 
     switch_node 1
-    send "ipaddr mleid\n"
-    expect "ipaddr mleid"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set addr_1 $expect_out(1,string)
-    expect "Done"
+    set addr_1 [get_ipaddr mleid]
     send "udp open\n"
-    expect "Done"
+    expect_line "Done"
     send "udp bind :: 11004\n"
-    expect "Done"
+    expect_line "Done"
     send "udp connect $addr_2 11003\n"
-    expect "Done"
+    expect_line "Done"
     send "udp send hello\n"
-    expect "Done"
+    expect_line "Done"
     send "udp send there\n"
-    expect "Done"
+    expect_line "Done"
 
     sleep 1
 
@@ -113,7 +105,7 @@ try {
 
     switch_node 2
     send "pollperiod 1000\n"
-    expect "Done"
+    expect_line "Done"
     expect "5 bytes from $addr_1 11004 hello"
     expect "5 bytes from $addr_1 11004 there"
 
@@ -134,34 +126,26 @@ try {
     setup_two_nodes "-" false
 
     switch_node 2
-    send "ipaddr mleid\n"
-    expect "ipaddr mleid"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set addr_2 $expect_out(1,string)
-    expect "Done"
+    set addr_2 [get_ipaddr mleid]
     send "udp open\n"
-    expect "Done"
+    expect_line "Done"
     send "udp bind :: 11003\n"
-    expect "Done"
+    expect_line "Done"
     send "pollperiod 100000\n"
-    expect "Done"
+    expect_line "Done"
 
     sleep 1
 
     switch_node 1
-    send "ipaddr mleid\n"
-    expect "ipaddr mleid"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set addr_1 $expect_out(1,string)
-    expect "Done"
+    set addr_1 [get_ipaddr mleid]
     send "udp open\n"
-    expect "Done"
+    expect_line "Done"
     send "udp bind :: 11004\n"
-    expect "Done"
+    expect_line "Done"
     send "udp connect $addr_2 11003\n"
-    expect "Done"
+    expect_line "Done"
     send "udp send hello\n"
-    expect "Done"
+    expect_line "Done"
 
     sleep 1
 
@@ -175,7 +159,7 @@ try {
 
     switch_node 2
     send "pollperiod 1000\n"
-    expect "Done"
+    expect_line "Done"
     expect "5 bytes from $addr_1 11004 hello"
 
     dispose_all
@@ -191,32 +175,24 @@ try {
 
     spawn_node 1 "rcp" "spinel+hdlc_uart://$host_pty"
     setup_leader
-    send "ipaddr mleid\n"
-    expect "ipaddr mleid"
-    expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-    set addr(1) $expect_out(1,string)
-    expect "Done"
+    set addr(1) [get_ipaddr mleid]
     send "udp open\n"
-    expect "Done"
+    expect_line "Done"
     send "udp bind :: 11004\n"
-    expect "Done"
+    expect_line "Done"
 
-    set max_children 15
+    set max_children 10
     for {set i 2} {$i <= $max_children + 1} {incr i} {
         spawn_node $i
         setup_node $i "-"
         switch_node $i
-        send "ipaddr mleid\n"
-        expect "ipaddr mleid"
-        expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-        set addr($i) $expect_out(1,string)
-        expect "Done"
+        set addr($i) [get_ipaddr mleid]
         send "udp open\n"
-        expect "Done"
+        expect_line "Done"
         send "udp bind :: 11003\n"
-        expect "Done"
+        expect_line "Done"
         send "pollperiod 100000\n"
-        expect "Done"
+        expect_line "Done"
     }
 
     sleep 1
@@ -224,7 +200,7 @@ try {
     switch_node 1
     for {set i 2} {$i <= $max_children + 1} {incr i} {
         send "udp send $addr($i) 11003 hello\n"
-        expect "Done"
+        expect_line "Done"
     }
 
     sleep 1
@@ -240,13 +216,13 @@ try {
     for {set i 7} {$i <= 9} {incr i} {
         switch_node $i
         send "pollperiod 1000\n"
-        expect "Done"
+        expect_line "Done"
         expect "5 bytes from $addr(1) 11004 hello"
     }
 
     switch_node 4
     send "udp send $addr(5) 11003 hello_from_node_4\n"
-    expect "Done"
+    expect_line "Done"
     if {$::env(THREAD_VERSION) != "1.1"} {
         expect "5 bytes from $addr(1) 11004 hello"
     }
@@ -263,7 +239,7 @@ try {
 
     switch_node 5
     send "pollperiod 1000\n"
-    expect "Done"
+    expect_line "Done"
     expect "17 bytes from $addr(4) 11003 hello_from_node_4"
 
     dispose_all
@@ -273,11 +249,11 @@ try {
 
     spawn_node 1 "rcp" "spinel+hdlc_uart://$host_pty"
     send "ifconfig up\n"
-    expect "Done"
+    expect_line "Done"
     send "thread start\n"
-    expect "Done"
+    expect_line "Done"
     wait_for "state" "leader"
-    expect "Done"
+    expect_line "Done"
 
     send "scan energy 100\n"
     expect "| Ch | RSSI |"
@@ -296,7 +272,7 @@ try {
     for {set i 11} {$i <= 26} {incr i} {
         expect -re "\\| +$i \\| +-?\\d+ \\|"
     }
-    expect "Done"
+    expect_line "Done"
 
     dispose_all
 } finally {
diff --git a/tests/scripts/expect/posix-rcp.exp b/tests/scripts/expect/posix-rcp.exp
index c6dd51d27..d2ccd4dc2 100755
--- a/tests/scripts/expect/posix-rcp.exp
+++ b/tests/scripts/expect/posix-rcp.exp
@@ -32,7 +32,7 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "rcp version\n"
-expect "Done"
+expect_line "Done"
 send "rcp something_invalid\n"
 expect "Error 7: InvalidArgs"
 
diff --git a/tests/scripts/expect/posix-scan-tx-to-sleep.exp b/tests/scripts/expect/posix-scan-tx-to-sleep.exp
index 7f2971479..a613737df 100755
--- a/tests/scripts/expect/posix-scan-tx-to-sleep.exp
+++ b/tests/scripts/expect/posix-scan-tx-to-sleep.exp
@@ -31,44 +31,40 @@ source "tests/scripts/expect/_common.exp"
 
 spawn_node 1 "rcp" "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?forkpty-arg=--sleep-to-tx&forkpty-arg=1"
 send "dataset init new\n"
-expect "Done"
+expect_line "Done"
 send "dataset panid 0xface\n"
-expect "Done"
+expect_line "Done"
 send "dataset commit active\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
-send "extaddr\n"
-expect "extaddr"
-expect -re {([0-9a-f]{16})}
-set extaddr $expect_out(1,string)
-expect "Done"
+set extaddr [get_extaddr]
 send "panid\n"
 expect "panid"
 expect -re {([0-9a-f]{4})}
 set pan $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "extpanid\n"
 expect "extpanid"
 expect -re {([0-9a-f]{16})}
 set extpan $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 expect "> "
 send "networkname\n"
 expect "networkname"
 expect -re {[\r\n]([^\r\n]+)[\r\n]}
 set network $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 send "channel\n"
 expect "channel"
 expect -re {(\d+)}
 set channel $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 
 spawn_node 2 "rcp" "spinel+hdlc+uart://$env(OT_SIMULATION_APPS)/ncp/ot-rcp?forkpty-arg=--sleep-to-tx&forkpty-arg=2"
 send "scan\n"
diff --git a/tests/scripts/expect/simulation-networktime.exp b/tests/scripts/expect/simulation-networktime.exp
index df98db2e1..ccbe3b5f6 100755
--- a/tests/scripts/expect/simulation-networktime.exp
+++ b/tests/scripts/expect/simulation-networktime.exp
@@ -32,12 +32,12 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "networktime 20 200\n"
-expect "Done"
+expect_line "Done"
 send "networktime\n"
 expect -re {Network Time:     \d+us \((unsynchronized|resync needed|synchronized)\)}
 expect "Time Sync Period: 20s"
 expect "XTAL Threshold:   200ppm"
-expect "Done"
+expect_line "Done"
 send "networktime something_invalid\n"
 expect "Error 7: InvalidArgs"
 
diff --git a/tests/scripts/expect/tun-dns-client.exp b/tests/scripts/expect/tun-dns-client.exp
index ef9c504ef..36909ba57 100755
--- a/tests/scripts/expect/tun-dns-client.exp
+++ b/tests/scripts/expect/tun-dns-client.exp
@@ -32,16 +32,16 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 send "dns resolve ipv6.google.com ::1 53\n"
 expect "DNS response for ipv6.google.com"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/tun-netif.exp b/tests/scripts/expect/tun-netif.exp
index d9635c7be..ad6d956d4 100755
--- a/tests/scripts/expect/tun-netif.exp
+++ b/tests/scripts/expect/tun-netif.exp
@@ -33,6 +33,6 @@ spawn_node 1
 
 send "netif\n"
 expect -re {[\r\n][^\r\n:]+?:\d+}
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/tun-netstat.exp b/tests/scripts/expect/tun-netstat.exp
index 1e5ed9266..bd33388aa 100755
--- a/tests/scripts/expect/tun-netstat.exp
+++ b/tests/scripts/expect/tun-netstat.exp
@@ -30,33 +30,29 @@
 source "tests/scripts/expect/_common.exp"
 
 spawn_node 1
+setup_leader
 
-send "ifconfig up\n"
-expect "Done"
 send "udp open\n"
-expect "Done"
+expect_line "Done"
 send "netstat\n"
 expect "|                 Local Address                 |                  Peer Address                 |"
 expect "+-----------------------------------------------+-----------------------------------------------+"
 expect "| 0:0:0:0:0:0:0:0:*                             | 0:0:0:0:0:0:0:0:*                             |"
-expect "Done"
+expect_line "Done"
 send "udp bind :: 10001\n"
-expect "Done"
+expect_line "Done"
 send "netstat\n"
 expect "|                 Local Address                 |                  Peer Address                 |"
 expect "+-----------------------------------------------+-----------------------------------------------+"
 expect "| 0:0:0:0:0:0:0:0:10001                         | 0:0:0:0:0:0:0:0:*                             |"
-expect "Done"
-send "ipaddr mleid\n"
-expect "ipaddr mleid"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
+expect_line "Done"
+set addr [get_ipaddr mleid]
 send "udp connect $addr 10001\n"
-expect "Done"
+expect_line "Done"
 send "netstat\n"
 expect "|                 Local Address                 |                  Peer Address                 |"
 expect "+-----------------------------------------------+-----------------------------------------------+"
 expect -re "\\| 0:0:0:0:0:0:0:0:10001 +\\| $addr:10001 +\\|"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/tun-realm-local-multicast.exp b/tests/scripts/expect/tun-realm-local-multicast.exp
index f87c22fba..e8c054347 100755
--- a/tests/scripts/expect/tun-realm-local-multicast.exp
+++ b/tests/scripts/expect/tun-realm-local-multicast.exp
@@ -40,13 +40,13 @@ spawn_node 1
 setup_default_network
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 set extaddr1 [get_extaddr]
 
@@ -54,10 +54,10 @@ spawn_node 2 cli
 setup_default_network
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "router"
 sleep 3
@@ -66,16 +66,16 @@ spawn_node 3 cli
 setup_default_network
 
 send "macfilter addr add ${extaddr1}\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr denylist\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "router"
 sleep 4
@@ -86,19 +86,19 @@ spawn_node 4 cli
 setup_default_network
 
 send "mode rn\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr add ${extaddr3}\n"
-expect "Done"
+expect_line "Done"
 
 send "macfilter addr allowlist\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "child"
 
@@ -107,7 +107,7 @@ set mleid4 [get_ipaddr "mleid"]
 switch_node 1
 
 send "ping ${mleid4}\n"
-expect "Done"
+expect_line "Done"
 expect "16 bytes from $mleid4: icmp_seq=1"
 
 dispose_all
diff --git a/tests/scripts/expect/tun-sntp.exp b/tests/scripts/expect/tun-sntp.exp
index aa920d7f8..e45d77c12 100755
--- a/tests/scripts/expect/tun-sntp.exp
+++ b/tests/scripts/expect/tun-sntp.exp
@@ -38,16 +38,16 @@ source "tests/scripts/expect/_common.exp"
 spawn_node 1
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 send "sntp query ::1 123\n"
 expect -re {SNTP response - Unix time: \d+ \(era: \d+\)}
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/tun-udp.exp b/tests/scripts/expect/tun-udp.exp
index 71ce6c386..187bda48a 100755
--- a/tests/scripts/expect/tun-udp.exp
+++ b/tests/scripts/expect/tun-udp.exp
@@ -36,35 +36,35 @@ spawn_node 1
 set timeout 1
 
 send "panid 0xface\n"
-expect "Done"
+expect_line "Done"
 
 send "ifconfig up\n"
-expect "Done"
+expect_line "Done"
 
 send "thread start\n"
-expect "Done"
+expect_line "Done"
 
 wait_for "state" "leader"
-expect "Done"
+expect_line "Done"
 
 send "udp open\n"
-expect "Done"
+expect_line "Done"
 
 send "udp bind :: 1234\n"
-expect "Done"
+expect_line "Done"
 
 send "dataset active\n"
 expect -re {Mesh Local Prefix: ([0-9a-f:]*)::\/64}
 set prefix $expect_out(1,string)
-expect "Done"
+expect_line "Done"
 
 send "udp connect $prefix:bb1:ebd6:ad10:f33 1234\n"
-expect "Done"
+expect_line "Done"
 
 send "udp connect :: 1\n"
-expect "Done"
+expect_line "Done"
 
 send "udp close\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all
diff --git a/tests/scripts/expect/v1_2-rcp-restoration.exp b/tests/scripts/expect/v1_2-rcp-restoration.exp
old mode 100644
new mode 100755
diff --git a/tests/scripts/expect/v1_2-rcp.exp b/tests/scripts/expect/v1_2-rcp.exp
index 71de92005..6815baa12 100755
--- a/tests/scripts/expect/v1_2-rcp.exp
+++ b/tests/scripts/expect/v1_2-rcp.exp
@@ -34,15 +34,12 @@ spawn_node 1
 
 spawn_node 2 mtd
 send "csl period 5000\n"
-expect "Done"
+expect_line "Done"
 
 setup_two_nodes "-" false
 
 switch_node 1
-send "ipaddr mleid\n"
-expect -re {(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4})}
-set addr $expect_out(1,string)
-expect "Done"
+set addr [get_ipaddr "mleid"]
 
 switch_node 2
 send "ping $addr\n"
diff --git a/tests/scripts/expect/v1_2-sed_mac_send.exp b/tests/scripts/expect/v1_2-sed_mac_send.exp
index 4a2e15dc4..faeeb3573 100755
--- a/tests/scripts/expect/v1_2-sed_mac_send.exp
+++ b/tests/scripts/expect/v1_2-sed_mac_send.exp
@@ -34,8 +34,8 @@ setup_two_nodes "-"
 
 switch_node 2
 send "mac send emptydata\n"
-expect "Done"
+expect_line "Done"
 send "mac send datarequest\n"
-expect "Done"
+expect_line "Done"
 
 dispose_all