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Re: IPv6 routing /48s

  • From: Mohacsi Janos
  • Date: Wed Nov 26 10:22:24 2008



On Wed, 26 Nov 2008, Mark Andrews wrote:


Mark Andrews writes:

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
u
p 
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.

% grep -r in6_addrpolicy /usr/src/lib/libc
/usr/src/lib/libc/net/getaddrinfo.c:    struct in6_addrpolicy pc_policy;
/usr/src/lib/libc/net/getaddrinfo.c:    struct in6_addrpolicy *pol, *ep;
/usr/src/lib/libc/net/getaddrinfo.c:    ep = (struct in6_addrpolicy *)(buf +
l);
/usr/src/lib/libc/net/getaddrinfo.c:    for (pol = (struct in6_addrpolicy *)b
uf; pol + 1 <= ep; pol++) {
/usr/src/lib/libc/net/getaddrinfo.c:    struct in6_addrpolicy *pol;
/usr/src/lib/libc/net/name6.c:  struct in6_addrpolicy pc_policy;
/usr/src/lib/libc/net/name6.c:  struct in6_addrpolicy *pol, *ep;
/usr/src/lib/libc/net/name6.c:  ep = (struct in6_addrpolicy *)(buf + l);
/usr/src/lib/libc/net/name6.c:  for (pol = (struct in6_addrpolicy *)buf; pol
+ 1 <= ep; pol++) {
/usr/src/lib/libc/net/name6.c:  struct in6_addrpolicy *pol;
%

And it was added on 30-Oct-03 according to CVS.

And it was not imported to any MacOS X yet....

Regards,
		Janos