11:34:30 <szilard> Super, i have closed myself out from my server with the firewall.
15:47:49 <m1ari> szilard: with your IPv6 woes, I'm wondering if there's something in your firewall config that's blocking part of the prefix advertisments meaning you then lose the SLAAC address, it's been a while since I last played with such things but possibly (at least temporarily) allowing ICMPv6 and/or IPv6 multicast and see if things start working better
15:48:50 <m1ari> possibly even trying to allow some of that with a log rule then you can at least see what's going through to see what's needed.
15:49:36 <m1ari> from my early memories of IPv6 it's supposed to be more reliant on multicast and ICMP to make things work properly.
15:50:38 <szilard> m1ari: that easily can be. I'll review the whole setup, because it is a bit fragile right now. I have implemented too mayn things a dirty way, so i have to return to the roots and reconsider / document an test every step along the path.
15:52:51 <sommerfeld> mlari: correct.  if you block icmpv6 you end up blocking ipv6's equivalent of ARP 
16:00:53 <sommerfeld> rather than broadcast, you derive a multicast group address from the low bits of the address and send to that group.  which means that nodes that aren't your target can ignore them more efficiently.
17:50:51 <bavrogar> blocking icmpv6 and multicast v6 is indeed killing ipv6 as it relies on it.
17:51:20 <bavrogar> multicast is used instead of arp. And icmpv6 is used for a lot of things by ipv6.