On 27 Jul 2011, at 16:15, Mark Andrews wrote: > > Because it will come down to "run 6to4 and be exposed to some bug" > or "not run 6to4 but be safe from the bug". We already have vendors > saying they are thinking about pulling 6to4 from their code bases > if it becomes historic. I would note that RIPE-501 does not mention 6to4: http://www.ripe.net/ripe/docs/ripe-501 As far as I can see, it only mentions RFC4213. I would ask what is the alternative if as Mark suggests the vendors begin removing 6to4 support? a) use 6to4 anyway on an open platform like OpenWRT b) use a tunnel broker - this works much better through NATs and with dynamic IPv4 addresses c) use your $work VPN if it supports IPv6, which it could/should if your company values IPv6 d) get IPv6 from your ISP, or move to one that has it if yours does not I suspect, but have no proof, that the huge majority of 6to4 users don't use it intentionally, and the content they are trying to reach is also available over IPv4. But for people who want to develop and use new IPv6-specific apps, then either a broker or something like OpenWRT ought to meet their needs? Tim _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf