diff options
Diffstat (limited to 'patches/source/glibc/glibc-2.10-dns-no-gethostbyname4.diff')
| -rw-r--r-- | patches/source/glibc/glibc-2.10-dns-no-gethostbyname4.diff | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/patches/source/glibc/glibc-2.10-dns-no-gethostbyname4.diff b/patches/source/glibc/glibc-2.10-dns-no-gethostbyname4.diff new file mode 100644 index 00000000..3fa365af --- /dev/null +++ b/patches/source/glibc/glibc-2.10-dns-no-gethostbyname4.diff @@ -0,0 +1,26 @@ +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. + +--- resolv/Versions 2008-08-02 10:26:09.000000000 +0200 ++++ resolv/Versions 2008-12-08 12:51:53.000000000 +0100 +@@ -102,7 +102,7 @@ libnss_dns { + _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; + } + } + |