I've got IPv6 set up and things work great if I also use IPv4. DNS
lookups go over IPv4 according to what I have in /etc/resolv.conf and
AAAA records are followed. However, if I decide to go with just IPv6 by
simplifying my /etc/hostname.if file and using "inet6 autoconf" by
itself, I cannot do any DNS lookups.

I'm thinking that somehow the rdns part of the router advertisement
isn't working. If it were working correctly, would the provided IPv6 DNS
server address show up in /etc/resolv.conf? I'm running -current but
it's from about a month ago. Before I update it to try and fix a problem
that I'm not sure is related to the snapshot I'm using, I figured I
would check with misc@ and see if anyone's got a working configuration.
If this is not supported yet, that'd be fine- I don't intend to forego
IPv4 right now across the board. Here's the output of "slaacctl show
interface":

wn0:
         index:   2 running: yes privacy: yes
        lladdr: 74:e5:0b:e8:9a:b8
         inet6: fe80::d47:3d1d:50fb:1eb2%iwn0
        Router Advertisement from fe80::7a8a:20ff:febb:53%iwn0
                received: 2018-09-12 22:03:04; 65s ago
                Cur Hop Limit:  64, M: 0, O: 0, Router Lifetime:  1800s
                Default Router Preference: Medium
                Reachable Time:         0ms, Retrans Timer:         0ms
                prefix: 2001:470:314f:a::/64
                        On-link: 1, Autonomous address-configuration: 1
                        vltime:    2592000, pltime:     604800
                rdns: 2001:470:314f:a::beef, lifetime: 600
        Address proposals
                id:    6, state:      CONFIGURED, privacy: y
                vltime:     604800, pltime:      86264, timeout:
86184s
                updated: 2018-09-12 22:03:04; 65s ago
                2001:470:314f:a:ab4:1bcf:d142:f01a, 2001:470:314f:a::/64
                id:    5, state:  NEARLY_EXPIRED, privacy: y
                vltime:     604800, pltime:          0, timeout:
603306s
                updated: 2018-09-12 21:39:30; 1479s ago
                2001:470:314f:a:6907:c112:fe0:e20f, 2001:470:314f:a::/64
                id:    4, state:  NEARLY_EXPIRED, privacy: y
                vltime:     604800, pltime:          0, timeout:
602387s
                updated: 2018-09-12 21:24:11; 2398s ago
                2001:470:314f:a:1be5:1662:848b:e889,
2001:470:314f:a::/64
                id:    2, state:  NEARLY_EXPIRED, privacy: y
                vltime:     604800, pltime:          0, timeout:
602105s
                updated: 2018-09-12 21:19:29; 2680s ago
                2001:470:314f:a:51b3:40a8:9776:96d1,
2001:470:314f:a::/64
                id:    3, state:      CONFIGURED, privacy: n
                vltime:    2592000, pltime:     604800, timeout:
604720s
                updated: 2018-09-12 22:03:04; 65s ago
                2001:470:314f:a:270d:54f6:76d5:2f8f,
2001:470:314f:a::/64
        Default router proposals
                id:    1, state:      CONFIGURED
                router: fe80::7a8a:20ff:febb:53%iwn0
                router lifetime:       1800
                Preference: Medium
                updated: 2018-09-12 22:03:04; 65s ago, timeout:
1720s




My /etc/hostname.iwn0:
nwid "B.D. Wong" wpakey "greatpasswordhere"
dhcp
inet6 autoconf

My /etc/resolv.conf (although removing this altogether changes nothing):
# Generated by iwn0 dhclient
nameserver 192.168.10.1


I'm really just wondering if anyone on the list has had success with
these router advertisement rdns setups. Thanks!

-- 
Put your Nose to the Grindstone!
                -- Amalgamated Plastic Surgeons and Toolmakers, Ltd.

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