Multiple Router Advertisements

[Derelict]

Again, the RAs are used to set the default route. That route is installed in the routing table. The issue I saw was traffic sourced from the SLAAC address went to the "Medium" priority router that was not in the routing table while traffic sourced from the DHCP6 address went according to the routing table - or at least to the "High" priority router which is the same as the DHCP6 server.

[jimp]

I don't see it in the thread yet but it's worth mentioning for others landing on this thread later that the place to look for this info is in ndp (but not yet in the pfSense GUI):

• ndp -r shows the router list (can flush with ndp -R)
• ndp -p shows the prefix list (can flush with ndp -P)
• ndp -I shows the default interface used when there is no default router (clear with ndp -I delete)
• ndp -H will harmonize the NDP router(s) info with the route table

That helps unravel the mystery of IPv6 behavior in unexpected/weird situations like this

[tman904]

Thank you jimp very helpful advice.:) Sounds like that will solve Derelicts IPV6 mystery.

[Derelict]

Still some things to examine there but yes the ndp output is what I was looking for.