Hello I noticed that the option is still not documented in resolv.conf(5).
A patch for the man page has been signed-off at the linux-man mailing list but somehow was not included in the upstream man page. We should include it into our manpage in the meantime nevertheless: http://www.spinics.net/lists/linux-man/msg00912.html diff --git a/man5/resolv.conf.5 b/man5/resolv.conf.5 index 4d67c75..2a2c694 100644 --- a/man5/resolv.conf.5 +++ b/man5/resolv.conf.5 @@ -231,6 +231,19 @@ sets in .IR _res.options . This enables support for the DNS extensions described in RFC\ 2671. +.TP +.BR single-request " (since glibc 2.10)" +sets +.BR RES_SNGLKUP +in +.IR _res.options . +By default, glibc performs IPv4 and IPv6 lookups in parallel since +version 2.9 (though many distribution packages of glibc are known +to disable that behavior in this version). Some appliance DNS servers +cannot handle these queries properly and make the requests time out. +This option disables the behavior and makes glibc perform the IPv6 +and IPv4 requests sequentially (at the cost of some slowdown of the +resolving process). .RE .LP The \fIdomain\fP and \fIsearch\fP keywords are mutually exclusive. bye, -christian- -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
