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patches/glibc/2.9/170-2.10-dns-no-gethostbyname4.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jan 17 23:06:02 2010 +0100 (2010-01-17)
changeset 1740 c57458bb354d
parent 1201 c9967a6e3b25
permissions -rw-r--r--
configure: do not require hg when configuring in an hg clone

When configuring in an hg clone, we need hg to compute the version string.
It can happen that users do not have Mercurial (eg. if they got a snapshot
rather that they did a full clone). In this case, we can still run, of
course, so simply fill the version string with a sufficiently explicit
value, that does not require hg. The date is a good candidate. 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/0080_all_glibc-2.10-dns-no-gethostbyname4.patch

     2 

     3 -= BEGIN original header =-

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

     5 http://bugs.gentoo.org/250468

     6 

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

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

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

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

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

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

    13 stuck waiting for the second reply.

    14 

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

    16 work around the issue, unfortunately it only helps with applications

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

    18 to do that.

    19 

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

    21 

    22 -= END original header =-

    23 

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

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

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

    27 @@ -102,7 +102,7 @@

    28      _nss_dns_gethostbyname_r; _nss_dns_getnetbyaddr_r;

    29      _nss_dns_getnetbyname_r; _nss_dns_getcanonname_r;

    30      _nss_dns_gethostbyaddr2_r;

    31 -    _nss_dns_gethostbyname4_r;

    32 +#    _nss_dns_gethostbyname4_r;

    33    }

    34  }

    35
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