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select mesh local address (#1734)

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This commit is contained in:
Buke Po
2017-05-09 22:00:48 -07:00
committed by Jonathan Hui
parent ff5c068a5a
commit 9c141d798f
1 changed files with 24 additions and 0 deletions
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src/core/net/ip6.cpp
+24
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@@ -1021,6 +1021,30 @@ const NetifUnicastAddress *Ip6::SelectSourceAddress(MessageInfo &aMessageInfo)
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