Original patch from: gentoo/src/patchsets/glibc/2.9/0080_all_glibc-2.10-dns-no-gethostbyname4.patch

-= BEGIN original header =-

http://sourceware.org/bugzilla/show_bug.cgi?id=7060

http://bugs.gentoo.org/250468

The gethostbyname4() lookup method is problematic since it fires out both

the A and AAAA DNS queries in parallel and over the same socket. This

should work in theory, but it turns out that many cheap DSL modems and

similar devices have buggy DNS servers - if the AAAA query arrives too

quickly after the A query, the server will generate only a single reply

with the A query id but returning an error for the AAAA query; we get

stuck waiting for the second reply.

For gethostbyname4() users affected, disabling IPv6 in the system might

work around the issue, unfortunately it only helps with applications

using AI_ADDRCONFIG (e.g. Firefox); some (notably e.g. Pidgin) neglect

to do that.

Real fix should be using separate ports for the A and AAAA queries.

-= END original header =-

diff -durN glibc-2_9.orig/resolv/Versions glibc-2_9/resolv/Versions

--- glibc-2_9.orig/resolv/Versions	2008-08-01 19:15:34.000000000 +0200

+++ glibc-2_9/resolv/Versions	2009-02-02 22:00:46.000000000 +0100

@@ -102,7 +102,7 @@

     _nss_dns_gethostbyname_r; _nss_dns_getnetbyaddr_r;

     _nss_dns_getnetbyname_r; _nss_dns_getcanonname_r;

     _nss_dns_gethostbyaddr2_r;

-    _nss_dns_gethostbyname4_r;

+#    _nss_dns_gethostbyname4_r;

   }

 }