diff --git a/src/core/ipv4/dhcp.c b/src/core/ipv4/dhcp.c
index 1887def7..40286612 100644
--- a/src/core/ipv4/dhcp.c
+++ b/src/core/ipv4/dhcp.c
@@ -390,7 +390,9 @@ dhcp_check(struct netif *netif)
 static void
 dhcp_handle_offer(struct netif *netif, struct dhcp_msg *msg_in)
 {
+#if ESP_DHCP && !ESP_DHCP_DISABLE_VENDOR_CLASS_IDENTIFIER
   u8_t n;
+#endif /* ESP_DHCP && !ESP_DHCP_DISABLE_VENDOR_CLASS_IDENTIFIER */
   struct dhcp *dhcp = netif_dhcp_data(netif);
 
   LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_handle_offer(netif=%p) %c%c%"U16_F"\n",
diff --git a/src/core/ipv4/ip4_napt.c b/src/core/ipv4/ip4_napt.c
index a67bfbd9..e05eefe5 100644
--- a/src/core/ipv4/ip4_napt.c
+++ b/src/core/ipv4/ip4_napt.c
@@ -56,6 +56,7 @@
 #include "lwip/lwip_napt.h"
 #include "lwip/ip4_napt.h"
 #include "lwip/timeouts.h"
+#include "lwip/stats.h"
 
 #define NO_IDX ((u16_t)-1)
 #define NT(x) ((x) == NO_IDX ? NULL : &ip_napt_table[x])
@@ -97,7 +98,7 @@ struct ip_portmap_entry {
 #endif
 
 static u16_t napt_list = NO_IDX, napt_list_last = NO_IDX, napt_free = 0;
-static u8_t ip_napt_max = 0;
+static u16_t ip_napt_max = 0;
 #if IP_NAPT_PORTMAP
 static uint8_t ip_portmap_max = 0;
 #endif
@@ -107,8 +108,6 @@ static struct ip_napt_entry *ip_napt_table = NULL;
 static struct ip_portmap_entry *ip_portmap_table = NULL;
 #endif
 
-static struct ip_napt_stats napt_stats;
-
 static void ip_napt_gc(uint32_t now, bool force);
 static void ip_napt_tmr(void *arg);
 
@@ -123,10 +122,12 @@ napt_debug_print(void)
 {
   int i, next, p;
   u32_t now = sys_now();
-  u32_t nr_total = napt_stats.nr_active_tcp + napt_stats.nr_active_udp + napt_stats.nr_active_icmp;
+#if LWIP_STATS
+  u32_t nr_total = STATS_GET(ip_napt.nr_active_tcp) + STATS_GET(ip_napt.nr_active_udp) + STATS_GET(ip_napt.nr_active_icmp);
   DPRINTF(("NAPT table (%"U16_F"+%"U16_F"+%"U16_F"=%"U32_F" / %"U16_F"):\n",
-           napt_stats.nr_active_tcp, napt_stats.nr_active_udp, napt_stats.nr_active_icmp, nr_total, napt_stats.max_entries));
+          STATS_GET(ip_napt.nr_active_tcp), STATS_GET(ip_napt.nr_active_udp), STATS_GET(ip_napt.nr_active_icmp), nr_total, ip_napt_max));
   if (nr_total == 0) return;
+#endif
 
   DPRINTF(("+-----------------------+-----------------------+-------+---------+----------+\n"));
   DPRINTF(("| src                   | dest                  | mport | flags   | age      |\n"));
@@ -175,7 +176,7 @@ static void
 ip_napt_deinit(void)
 {
   napt_list = NO_IDX;
-  napt_stats.max_entries = 0;
+ip_napt_max = 0;
 #if IP_NAPT_PORTMAP
   ip_portmap_max = 0;
 #endif
@@ -218,7 +219,6 @@ ip_napt_init(uint16_t max_nat, uint8_t max_portmap)
     for (i = 0; i < max_nat - 1; i++)
       ip_napt_table[i].next = i + 1;
     ip_napt_table[i].next = NO_IDX;
-    napt_stats.max_entries = max_nat;
 
     sys_timeout(NAPT_TMR_INTERVAL, ip_napt_tmr, NULL);
   }
@@ -366,20 +366,22 @@ ip_napt_insert(struct ip_napt_entry *t)
   if (napt_list_last == NO_IDX)
     napt_list_last = ti;
 
+#if LWIP_STATS
 #if LWIP_TCP
   if (t->proto == IP_PROTO_TCP)
-    napt_stats.nr_active_tcp++;
+    STATS_INC(ip_napt.nr_active_tcp);
 #endif
 #if LWIP_UDP
   if (t->proto == IP_PROTO_UDP)
-    napt_stats.nr_active_udp++;
+    STATS_INC(ip_napt.nr_active_udp);
 #endif
 #if LWIP_ICMP
   if (t->proto == IP_PROTO_ICMP)
-    napt_stats.nr_active_icmp++;
+    STATS_INC(ip_napt.nr_active_icmp);
 #endif
   LWIP_DEBUGF(NAPT_DEBUG, ("ip_napt_insert(): TCP=%d, UDP=%d, ICMP=%d\n",
-                           napt_stats.nr_active_tcp, napt_stats.nr_active_udp, napt_stats.nr_active_icmp));
+          STATS_GET(ip_napt.nr_active_tcp), STATS_GET(ip_napt.nr_active_udp), STATS_GET(ip_napt.nr_active_icmp)));
+#endif /* LWIP_STATS */
 }
 
 static void
@@ -398,18 +400,21 @@ ip_napt_free(struct ip_napt_entry *t)
   t->next = napt_free;
   napt_free = ti;
 
+#if LWIP_STATS
 #if LWIP_TCP
   if (t->proto == IP_PROTO_TCP)
-    napt_stats.nr_active_tcp--;
+    STATS_DEC(ip_napt.nr_active_tcp);
 #endif
 #if LWIP_UDP
   if (t->proto == IP_PROTO_UDP)
-    napt_stats.nr_active_udp--;
+    STATS_DEC(ip_napt.nr_active_udp);
 #endif
 #if LWIP_ICMP
   if (t->proto == IP_PROTO_ICMP)
-    napt_stats.nr_active_icmp--;
+    STATS_DEC(ip_napt.nr_active_icmp);
 #endif
+#endif /* LWIP_STATS */
+
   LWIP_DEBUGF(NAPT_DEBUG, ("ip_napt_free\n"));
 #if NAPT_DEBUG
   napt_debug_print();
@@ -1007,7 +1012,7 @@ ip_napt_gc(uint32_t now, bool force)
     ip_napt_free(&ip_napt_table[oldest]);
     evicted++;
     forced++;
-    napt_stats.nr_forced_evictions++;
+    STATS_INC(ip_napt.nr_forced_evictions);
   }
   LWIP_DEBUGF(NAPT_DEBUG, ("ip_napt_gc(%d): chk %d evict %d (forced %d), oldest %u\n",
                            force, checked, evicted, forced, oldest_age));
@@ -1042,10 +1047,12 @@ ip_napt_tmr(void *arg)
   sys_timeout(NAPT_TMR_INTERVAL, ip_napt_tmr, arg);
 }
 
+#if LWIP_STATS
 void
-ip_napt_get_stats(struct ip_napt_stats *stats)
+ip_napt_get_stats(struct stats_ip_napt *stats)
 {
-  *stats = napt_stats;
+  *stats = STATS_GET(ip_napt);
 }
+#endif /* LWIP_STATS */
 
 #endif /* ESP_LWIP && LWIP_IPV4 && IP_NAPT */
diff --git a/src/core/stats.c b/src/core/stats.c
index 34e9b270..d8f31e56 100644
--- a/src/core/stats.c
+++ b/src/core/stats.c
@@ -139,6 +139,17 @@ stats_display_sys(struct stats_sys *sys)
 }
 #endif /* SYS_STATS */
 
+#if IP_NAPT_STATS
+void stats_display_ip_napt(struct stats_ip_napt *napt)
+{
+  LWIP_PLATFORM_DIAG(("\nIP NAPT\n\t"));
+  LWIP_PLATFORM_DIAG(("nr_active_tcp:        %"STAT_COUNTER_F"\n\t", napt->nr_active_tcp));
+  LWIP_PLATFORM_DIAG(("nr_active_udp:        %"STAT_COUNTER_F"\n\t", napt->nr_active_udp));
+  LWIP_PLATFORM_DIAG(("nr_active_icmp:       %"STAT_COUNTER_F"\n\t", napt->nr_active_icmp));
+  LWIP_PLATFORM_DIAG(("nr_forced_evictions:  %"STAT_COUNTER_F"\n\t", napt->nr_forced_evictions));
+}
+#endif /* IP_NAPT_STATS */
+
 void
 stats_display(void)
 {
@@ -162,6 +173,7 @@ stats_display(void)
     MEMP_STATS_DISPLAY(i);
   }
   SYS_STATS_DISPLAY();
+  IP_NAPT_STATS_DISPLAY();
 }
 #endif /* LWIP_STATS_DISPLAY */
 
diff --git a/src/include/lwip/lwip_napt.h b/src/include/lwip/lwip_napt.h
index 073a3d75..a3d27955 100644
--- a/src/include/lwip/lwip_napt.h
+++ b/src/include/lwip/lwip_napt.h
@@ -141,22 +141,16 @@ u8_t
 ip_portmap_remove(u8_t proto, u16_t mport);
 
 
-struct ip_napt_stats {
-  u16_t max_entries;
-  u16_t nr_active_tcp;
-  u16_t nr_active_udp;
-  u16_t nr_active_icmp;
-  u16_t nr_forced_evictions;
-};
 
+#if LWIP_STATS
 /**
  * Get statistics.
  *
  * @param stats struct to receive current stats
  */
 void
-ip_napt_get_stats(struct ip_napt_stats *stats);
-
+ip_napt_get_stats(struct stats_ip_napt *stats);
+#endif
 
 #endif /* IP_NAPT */
 #endif /* IP_FORWARD */
diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 32545029..99eb4979 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -2252,6 +2252,14 @@
 #define MIB2_STATS                      0
 #endif
 
+/**
+ * IP_NAPT_STATS==1: Stats for IP NAPT.
+ */
+#if !defined IP_NAPT_STATS || defined __DOXYGEN__
+#define IP_NAPT_STATS                   (IP_NAPT)
+#endif
+
+
 #else
 
 #define LINK_STATS                      0
@@ -2272,6 +2280,7 @@
 #define MLD6_STATS                      0
 #define ND6_STATS                       0
 #define MIB2_STATS                      0
+#define IP_NAPT_STATS                   0
 
 #endif /* LWIP_STATS */
 /**
diff --git a/src/include/lwip/stats.h b/src/include/lwip/stats.h
index b570dbac..94e16691 100644
--- a/src/include/lwip/stats.h
+++ b/src/include/lwip/stats.h
@@ -228,6 +228,18 @@ struct stats_mib2_netif_ctrs {
   u32_t ifouterrors;
 };
 
+#if ESP_LWIP && IP_NAPT_STATS
+/**
+ * IP NAPT stats
+ */
+struct stats_ip_napt {
+  STAT_COUNTER nr_active_tcp;
+  STAT_COUNTER nr_active_udp;
+  STAT_COUNTER nr_active_icmp;
+  STAT_COUNTER nr_forced_evictions;
+};
+#endif /* ESP_LWIP && IP_NAPT */
+
 /** lwIP stats container */
 struct stats_ {
 #if LINK_STATS
@@ -298,6 +310,11 @@ struct stats_ {
   /** SNMP MIB2 */
   struct stats_mib2 mib2;
 #endif
+#if ESP_LWIP && IP_NAPT_STATS
+  /** IP NAPT */
+  struct stats_ip_napt ip_napt;
+#endif
+
 };
 
 /** Global variable containing lwIP internal statistics. Add this to your debugger's watchlist. */
@@ -467,6 +484,19 @@ void stats_init(void);
 #define MIB2_STATS_INC(x)
 #endif
 
+#if IP_NAPT_STATS
+#define IP_NAPT_STATS_INC(x) STATS_INC(x)
+#else
+#define IP_NAPT_STATS_INC(x)
+#endif
+
+#if LWIP_STATS_DISPLAY && IP_NAPT_STATS
+void stats_display_ip_napt(struct stats_ip_napt *napt);
+#define IP_NAPT_STATS_DISPLAY() stats_display_ip_napt(&lwip_stats.ip_napt)
+#else
+#define IP_NAPT_STATS_DISPLAY()
+#endif
+
 /* Display of statistics */
 #if LWIP_STATS_DISPLAY
 void stats_display(void);