Bug#593571: libc6: RES_ROTATE resolver option broken?

["Aleksi Suhonen" <ams@cs.tut.fi>]

Package: libc6
Version: 2.11.2-2
Severity: normal

There appears to be something wrong with RES_ROTATE.
I had "options rotate" in my /etc/resolv.conf and my web
browsers would occasionally report well known websites as
unknown hosts. Traceroute also missed reverse mappings on
many hops.

I snooped my DNS traffic with wireshark and noticed that
sometimes the resolver doesn't even send any queries before
announcing that some name doesn't exist.

While Googling for the issue, I found this:

http://sourceware.org/ml/libc-hacker/2002-05/msg00035.html

It sounds like the same issue, but I'm not sure. I hope it's useful.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages libc6 depends on:
ii  libc-bin                      2.11.2-2   Embedded GNU C Library: Binaries
ii  libgcc1                       1:4.4.4-8  GCC support library

libc6 recommends no packages.

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]         1.5.33     Debian configuration management sy
pn  glibc-doc                     <none>     (no description available)
ii  locales                       2.11.2-2   Embedded GNU C Library: National L

-- debconf information excluded