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authorUlrich Drepper <drepper@redhat.com>2010-04-03 17:56:51 -0700
committerUlrich Drepper <drepper@redhat.com>2010-04-03 17:56:51 -0700
commited0874085976531bda8a05540b0816e8bf711b71 (patch)
treec162d55d44c0281016a7e59312e25e151f622972 /posix/gai.conf
parent647450cfb089a60f1dc3de7d68874cd21f475ec7 (diff)
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Document problem with NATs in getaddrinfo.
Diffstat (limited to 'posix/gai.conf')
-rw-r--r--posix/gai.conf9
1 files changed, 9 insertions, 0 deletions
diff --git a/posix/gai.conf b/posix/gai.conf
index 3dba1a905d..195287e1c8 100644
--- a/posix/gai.conf
+++ b/posix/gai.conf
@@ -66,3 +66,12 @@
 #scopev4 ::ffff:172.16.0.0/108   5
 #scopev4 ::ffff:192.168.0.0/112  5
 #scopev4 ::ffff:0.0.0.0/96       14
+#
+#    For sites which use site-local IPv4 addresses behind NAT there is
+#    the problem that even if IPv4 addresses are preferred they do not
+#    have the same scope and are therefore not sorted first.  To change
+#    this use only these rules:
+#
+#scopev4 ::ffff:169.254.0.0/112  2
+#scopev4 ::ffff:127.0.0.0/104    2
+#scopev4 ::ffff:0.0.0.0/96       14