From 6e2a7825284e41f2336b0cb5a98609ff486e85fa Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 18 May 2006 16:58:36 +0000 Subject: * sysdeps/posix/getaddrinfo.c: Add unique labels to the default RFC3484 precedence table for fec0::/10 and fc00::/7 (site-local and ULA respectively). Set precedence for IPv4 address to 10 as defined in RFC3484 for preferring IPv6. * posix/gai.conf: Update to match the new default tables. --- posix/gai.conf | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) (limited to 'posix/gai.conf') diff --git a/posix/gai.conf b/posix/gai.conf index 5f063f5c3c..0e334ac2c5 100644 --- a/posix/gai.conf +++ b/posix/gai.conf @@ -24,17 +24,29 @@ #label 2002::/16 2 #label ::/96 3 #label ::ffff:0:0/96 4 +#label fec0::/10 5 +#label fc00::/7 6 +# +# This default differs from the tables given in RFC 3484 by handling +# (now obsolete) site-local IPv6 addresses and Unique Local Addresses. +# The reason for this difference is that these addresses are never +# NATed while IPv4 site-local addresses most probably are. Given +# the precedence of IPv6 over IPv4 (see below) on machines having only +# site-local IPv4 and IPv6 addresses a lookup for a global address would +# see the IPv6 be preferred. The result is a long delay because the +# site-local IPv6 addresses cannot be used while the IPv4 address is +# (at least for the foreseeable future) NATed. # # precedence -# Add another rule the to RFC 3484 precendence table. See section 2.1 +# Add another rule the to RFC 3484 precedence table. See section 2.1 # and 10.3 in RFC 3484. The default is: # -#precendence ::1/128 50 -#precendence ::/0 40 -#precendence 2002::/16 30 -#precendence ::/96 20 -#precendence ::ffff:0:0/96 10 +#precedence ::1/128 50 +#precedence ::/0 40 +#precedence 2002::/16 30 +#precedence ::/96 20 +#precedence ::ffff:0:0/96 10 # # For sites which prefer IPv4 connections change the last line to # -#precendence ::ffff:0:0/96 100 +#precedence ::ffff:0:0/96 100 -- cgit v1.2.1