nanog mailing list archives
Re: IPv6 routing /48s
From: Jack Bates <jbates () brightok net>
Date: Fri, 21 Nov 2008 10:16:11 -0600
Florian Weimer wrote:
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.This must be a broken RFC 3484 implementation: - 6to4 should be less prerefed than IPv4 if the service has both AAAA and A record.RFC 3848 generally prefers IPv6 over IPv4 and fails if the host running its algorithm has neither IPv6 connectivity nore mean to detect that efficiently. I think Windows does something in the second area.
Yes and no. The test that was being run used 6to4 addresses, so every 6to4 capable device did try to reach it via 6to4, since that is preferred over IPv4. If it had used non-6to4 addressing, then IPv4 would had been preferred on those hosts that didn't have non-6to4 addresses.
This is one reason why I believe using 6to4 addresses to be an issue for content providers. If they use non-6to4 addressing for the content, then most people will prefer IPv4 except for those who have configured non-6to4 addresses or altered the labels to force 6to4 to work with non-6to4 addressing.
Gads, is it appropriate to just say Native when referring to non-6to4? lol Jack
Current thread:
- Re: IPv6 routing /48s, (continued)
- Re: IPv6 routing /48s Joel Jaeggli (Nov 18)
- Re: IPv6 routing /48s Christopher Morrow (Nov 18)
- Re: IPv6 routing /48s Jack Bates (Nov 18)
- Re: IPv6 routing /48s Jeroen Massar (Nov 18)
- Re: IPv6 routing /48s Perry Lorier (Nov 18)
- Re: IPv6 routing /48s Michael Sinatra (Nov 18)
- Re: IPv6 routing /48s Florian Weimer (Nov 19)
- Re: IPv6 routing /48s Nathan Ward (Nov 19)
- Re: IPv6 routing /48s Mohacsi Janos (Nov 20)
- Re: IPv6 routing /48s Florian Weimer (Nov 21)
- Re: IPv6 routing /48s Jack Bates (Nov 21)
- RE: IPv6 routing /48s Tony Hain (Nov 25)
- Re: IPv6 routing /48s Niels Bakker (Nov 25)
- Re: IPv6 routing /48s Mark Andrews (Nov 25)
- Re: IPv6 routing /48s Niels Bakker (Nov 25)
- Re: IPv6 routing /48s Mark Andrews (Nov 25)
- Re: IPv6 routing /48s Niels Bakker (Nov 25)
- Re: IPv6 routing /48s Niels Bakker (Nov 25)
- Re: IPv6 routing /48s Mark Andrews (Nov 25)
- Re: IPv6 routing /48s Florian Weimer (Nov 26)
- Re: IPv6 routing /48s Leo Bicknell (Nov 18)