Cisco Bug: CSCvs63467 - ipv6 dual stack not working on 9800
Jan 17, 2020
- Cisco Catalyst 9800 Series Wireless Controllers
Known Affected Releases
Symptom: The IPv6 is using SLAAC Conditions: 1) Wireless client tries to ping an IPv6 destination in a different subnet, the next hop is the IPv6 gateway. 2) Wireless client sends NS to resolve the MAC address of the gateway. 3) Wireless client gets NA from gateway. 4) On wireless client, IPv6 ping request can be sent out now (#1229 in the trace.txt). 5) After IPv6 ping reply arriving at the gateway, to send the IPv6 ping reply to the wireless client, gateway sends out NS to resolve the MAC address of the client (#1327 in the trace.txt). 6) The NS from gateway is dropped in CPP because the SISF snooping flag is not enabled for the wireless client vlan (vlan 210 in customer case).
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Bug Details Include
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