Finally hit the office and called someone at random. They are looking into it. I can reach www.ietf.org just fine which is in the same network, so this appears to be host specific. Be funny if the MAC address changed and SLAAC mismatched the host from the AAAA; an annoying problem seen occasionally. Jack Jack Bates wrote:
Anyone seeing issues with reachability for tools.ietf.org in IPv6? v4 works fine for me, but oh, the timeouts. :(
Tracing the route to tools.ietf.org (2001:1890:1112:1:214:22FF:FE1F:1E54)
1 bnet6-2.tunnel.tserv2.fmt.ipv6.he.net (2001:470:1F03:1031::1) 64 msec 64 msec 64 msec 2 1g-3-9.core1.fmt1.ipv6.he.net (2001:470:0:44::3) 76 msec 72 msec 76 msec 3 10gigabitethernet1-1.core1.pao1.he.net (2001:470:0:2E::2) 64 msec 64 msec 64 msec 4 10gigabitethernet2-4.core1.ash1.he.net (2001:470:0:35::2) 144 msec 140 msec 140 msec 5 ibr01-ve96.asbn01.occaid.net (2001:504:0:2:0:3:71:1) 140 msec 140 msec 140 msec 6 r1.flpnj.ipv6.att.net (2001:4830:E2:2B::2) 148 msec 148 msec 148 msec 7 2001:1890:61:9117::2 224 msec 228 msec 224 msec 8 2001:1890:61:9117::2 !H * *