author | Martin Lund <mgl@doredevelopment.dk> |
Wed May 19 17:53:04 2010 +0200 (2010-05-19) | |
changeset 1965 | e3d532dd8b5d |
parent 1201 | c9967a6e3b25 |
permissions | -rw-r--r-- |
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Original patch from: gentoo/src/patchsets/glibc/2.9/0080_all_glibc-2.10-dns-no-gethostbyname4.patch |
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|
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-= BEGIN original header =- |
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http://sourceware.org/bugzilla/show_bug.cgi?id=7060 |
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http://bugs.gentoo.org/250468 |
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|
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The gethostbyname4() lookup method is problematic since it fires out both |
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the A and AAAA DNS queries in parallel and over the same socket. This |
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should work in theory, but it turns out that many cheap DSL modems and |
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similar devices have buggy DNS servers - if the AAAA query arrives too |
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quickly after the A query, the server will generate only a single reply |
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with the A query id but returning an error for the AAAA query; we get |
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stuck waiting for the second reply. |
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|
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For gethostbyname4() users affected, disabling IPv6 in the system might |
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work around the issue, unfortunately it only helps with applications |
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using AI_ADDRCONFIG (e.g. Firefox); some (notably e.g. Pidgin) neglect |
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to do that. |
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|
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Real fix should be using separate ports for the A and AAAA queries. |
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-= END original header =- |
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diff -durN glibc-2_9.orig/resolv/Versions glibc-2_9/resolv/Versions |
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--- glibc-2_9.orig/resolv/Versions 2008-08-01 19:15:34.000000000 +0200 |
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+++ glibc-2_9/resolv/Versions 2009-02-02 22:00:46.000000000 +0100 |
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@@ -102,7 +102,7 @@ |
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_nss_dns_gethostbyname_r; _nss_dns_getnetbyaddr_r; |
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_nss_dns_getnetbyname_r; _nss_dns_getcanonname_r; |
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_nss_dns_gethostbyaddr2_r; |
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- _nss_dns_gethostbyname4_r; |
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+# _nss_dns_gethostbyname4_r; |
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} |
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} |
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