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Cisco Bug: CSCsz37833 - UNI:IPv6 unicast downstream loss when RP-SO with MLD-zapping

Last Modified

Feb 09, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

12.2(33)XNC

Description (partial)

Symptom:
ASR does not immediately respond to IPv6 NS query following an RP switchover with MLD zappings coming from downstream hosts.

Conditions:
Due to this bug, the upstream neighbour router may delete downstream neighbour entry and cause a downstream IPv6 unicast packet drops.
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