IPv6 routing /48s
nanog at daork.net
Wed Nov 19 21:02:29 UTC 2008
On 20/11/2008, at 4:06 AM, Florian Weimer wrote:
> * Michael Sinatra:
>> And it just reinforces the fear that people have against putting AAAA
>> records in DNS for their publicly-accessible resources, especially
> Won't current Windows clients work just fine in this case?
> I have no idea what a fix should look like for some of the non-Windows
> systems I care about, unfortunately.
No, unfortunately broken 6to4 auto-configuration (ie, in Vista, XPSP2,
when on a non-RFC1918 IP address) breaks, and you get 90s timeouts
before falling back to IPv4/A.
Works fine most of the time, however when that non-RFC1918 address is
behind NAT, or some sort of packet filter, then it doesn't work so
well, and the client does not have a way to detect that reliably.
More information about the NANOG