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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)
downloadglibc-6e2a7825284e41f2336b0cb5a98609ff486e85fa.tar.gz
* 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