IPv6 radvd RDNSS Issue
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I'm have a 2.2 box running 10.1-RELEASE-p4 FreeBSD 10.1-RELEASE-p4 #0 36d7dec(releng/10.1)-dirty: Fri Jan 16 12:38:50 CST 2015.
I have configured 2 WAN interfaces, one of which has DHCPv6 enabled (TWC).
Internally, I have 3 networks defined: LAN, Guest & DMZ. LAN & Guest have track interface configured, tracking the TWC WAN interface, and each obtaining a /64. I have configured the DNS resolver (unbound) to listen on the three internal interfaces as well as localhost.
The /var/etc/radvd.conf does show that the RDNSS for the Guest network to be the Guest IPv6 interface IP, and the LAN interface to be the LAN interface IPv6 IP. However, LAN clients are receiving the Guest interface IPv6 IP as their DNS server and not the LAN interface IP.