select mesh local address (#1734)
diff --git a/src/core/net/ip6.cpp b/src/core/net/ip6.cpp
index 16a610e..d9d43dd 100644
--- a/src/core/net/ip6.cpp
+++ b/src/core/net/ip6.cpp
@@ -1021,6 +1021,30 @@
rvalPrefixMatched = candidatePrefixMatched;
}
}
+ else if (rvalAddr->GetScope() == Address::kRealmLocalScope)
+ {
+ // Additional rule: Prefer appropriate realm local address
+ if (overrideScope > Address::kRealmLocalScope)
+ {
+ if (rvalAddr->GetAddress().IsRoutingLocator())
+ {
+ // Prefer EID if destination is not realm local.
+ rvalAddr = addr;
+ rvalIface = candidateId;
+ rvalPrefixMatched = candidatePrefixMatched;
+ }
+ }
+ else
+ {
+ if (candidateAddr->IsRoutingLocator())
+ {
+ // Prefer RLOC if destination is realm local.
+ rvalAddr = addr;
+ rvalIface = candidateId;
+ rvalPrefixMatched = candidatePrefixMatched;
+ }
+ }
+ }
else if (addr->mPreferred && !rvalAddr->mPreferred)
{
// Rule 3: Avoid deprecated addresses
