Bug#569592: please add RES_USE_DNSSEC support

[Peter Palfrader <weasel@debian.org>]

Package: libc6

Hi,

glibc2.11 adds RES_USE_DNSSEC support which is needed for ssh[1] to
properly handle SSHFP records.

Existing backports suggest that the change is well contained:
http://bd.hauke-lampe.de/dnssec/res_use_dnssec-backports-for-ubuntu-and-debian.html
https://www.hauke-lampe.de/linkedstuff/glibc-2.7-res_use_dnssec_anslen_backported_2.11-debian-lenny.patch
I haven't tried them however.

Please add this support to whatever we will ship with squeeze.

Cheers,
weasel

1. with another tiny patch
  https://cvs.fedoraproject.org/viewvc/F-12/openssh/openssh-5.2p1-edns.patch?revision=1.1&view=markup
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