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[mesh-forwarder] always set direct transmission for MPL messages (#11887)

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This commit is contained in:
Jonathan Hui
2025-09-02 08:06:48 -07:00
committed by GitHub
parent fcfe442082
commit 6657de95b8
1 changed files with 4 additions and 5 deletions
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src/core/thread/mesh_forwarder_ftd.cpp
+4 -5
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@@ -61,11 +61,10 @@ void MeshForwarder::SendMessage(OwnedPtr<Message> aMessagePtr)
if (destination.IsMulticast())
{
// For traffic destined to multicast address larger than realm local, generally it uses IP-in-IP
// encapsulation (RFC2473), with outer destination as ALL_MPL_FORWARDERS. So here if the destination
// is multicast address larger than realm local, it should be for indirection transmission for the
// device's sleepy child, thus there should be no direct transmission.
if (!destination.IsMulticastLargerThanRealmLocal())
// A non-link-local multicast message that does not
// contain an MPL Option should only be forwarded to
// children using indirect transmissions.
if (destination.IsLinkLocalMulticast() || ip6Header.GetNextHeader() == Ip6::kProtoHopOpts)
{
message.SetDirectTransmission();
}