[ip6] bypass filtering for multicast addresses larger than RealmLocal

gytxxsy · gytxxsy · commit 840c54d08a08 · 2025-10-28T16:28:05.000+08:00
diff --git a/src/core/net/ip6.cpp b/src/core/net/ip6.cpp
@@ -963,7 +963,9 @@ Error Ip6::PassToHost(OwnedPtr<Message> &aMessagePtr,
         VerifyOrExit(aReceive, error = kErrorDrop);
     }
 
-    if (mReceiveFilterEnabled && aReceive)
+    if (mReceiveFilterEnabled && aReceive &&
+        (!aHeader.GetDestination().IsMulticast() || aHeader.GetDestination().IsLinkLocalMulticast() ||
+         aHeader.GetDestination().IsRealmLocalMulticast()))
     {
         switch (aIpProto)
         {

Original file line number	Diff line number	Diff line change
`@@ -963,7 +963,9 @@ Error Ip6::PassToHost(OwnedPtr<Message> &aMessagePtr,`
`963`	`963`	`VerifyOrExit(aReceive, error = kErrorDrop);`
`964`	`964`	`}`
`965`	`965`
`966`		`- if (mReceiveFilterEnabled && aReceive)`
	`966`	`+ if (mReceiveFilterEnabled && aReceive &&`
	`967`	`+ (!aHeader.GetDestination().IsMulticast() \|\| aHeader.GetDestination().IsLinkLocalMulticast() \|\|`
	`968`	`+ aHeader.GetDestination().IsRealmLocalMulticast()))`
`967`	`969`	`{`
`968`	`970`	`switch (aIpProto)`
`969`	`971`	`{`