North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: IPv6 routing /48s
In message <[email protected]>, Niels Bakker writes: > * [email protected] (Mark Andrews) [Wed 26 Nov 2008, 01:55 CET]: > > In message <[email protected]>, Niels Bakker writes: > >> * [email protected] (Tony Hain) [Wed 26 Nov 2008, 01:03 CET]: > >>> In any case, content providers can avoid the confusion if they simply put > up > >>> a local 6to4 router alongside their 2001:: prefix, and populate DNS with > >>> both. Longest match will cause 2001:: connected systems to chose that dst > , > >>> while 6to4 connected systems will chose 2002:: as the dst. There is no ne > ed > >> Huh? Longest match done by web browsers and other applications? Since > >> when? > > FreeBSD 6 has is as part of the standard getaddrinfo() implementation. > > I don't see that do any differentiation between 2001::/32, 2002::/16 > and 2000::/8; only between IPv6-mapped IPv4 addresses and various > interface/link/site-local addresses. And even that function has a big > * XXX: we should standardize the functions and link them as standard > * library. > warning stuck on top of it 2002::/16 vs non 2002::/16 should be in the policy table. This is the default prefer ipv6 policy table for FreeBSD 6.4-PRERELEASE. There is also a alternate prefer ipv4 policy table that will be set if IPv6 is disabled. Prefix Prec Label Use ::1/128 50 0 0 ::/0 40 1 4997 2002::/16 30 2 0 ::/96 20 3 0 ::ffff:0.0.0.0/96 10 4 0 Mark > -- Niels. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: [email protected]
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