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[dualtor][intfsorch] Preserve port MAC when updating router interface MAC #4816

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[dualtor][intfsorch] Preserve port MAC when updating router interface MAC #4816

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5 changes: 4 additions & 1 deletion orchagent/intfsorch.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1078,7 +1078,10 @@ void IntfsOrch::doTask(Consumer &consumer)

if (!mac)
{
mac = gMacAddress;
// Prefer the port's own MAC (e.g. a VLAN SVI's gateway MAC populated
// from VLAN_TABLE) and only fall back to the switch MAC when the port
// has none.
mac = port.m_mac ? port.m_mac : gMacAddress;
Comment on lines +1081 to +1084
}

// update mac if it is changed
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