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authorUlrich Drepper <drepper@redhat.com>2006-05-18 16:58:36 +0000
committerUlrich Drepper <drepper@redhat.com>2006-05-18 16:58:36 +0000
commit6e2a7825284e41f2336b0cb5a98609ff486e85fa (patch)
tree8084e65d95ff9acac81496574d841ae8c5d5011c /posix/gai.conf
parent758b9d7efe599e3de3472593b6f8f03cfc29ea92 (diff)
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* 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.
Diffstat (limited to 'posix/gai.conf')
-rw-r--r--posix/gai.conf26
1 files changed, 19 insertions, 7 deletions
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  <mask>   <value>
-#    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