Your message dated Wed, 01 Feb 2017 13:06:26 +0000
with message-id <[email protected]>
and subject line Bug#853281: fixed in ndisc6 1.0.3-3
has caused the Debian Bug report #853281,
regarding rdnssd still messes up /etc/resolv.conf on DNSSL-enabled networks
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)
--
853281: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853281
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: rdnssd
Version: 1.0.3-2
Severity: important
Tags: ipv6, fixed-upstream
This issue relates heavily to #767071, where previous versions of the
rdnssd Debian package would completely overwrite /etc/resolv.conf, with
all the bad consequences and unexpected, counter-intuitive breakage
cases it implied. Since 1.0.3-2, the package uses an upstream script
to cooperatively merge its configuration into /etc/resolv.conf.
Unfortunately the version of the script in the Debian package is buggy
and plagued by the same kind of issues.
rdnssd can contribute to /etc/resolv.conf:
- IPv6 nameserver lines (most basic function)
- search lines (DNSSL option)
The current version of the merge hook fails to properly handle search
lines. Thus on networks where DNSSL is configured in IPv6 router
advertisements, it can lead to:
- failure to merge IPv6 nameservers into /etc/resolv.conf
- littering /etc/resolv.conf with multiple stray search lines (only the
last search line in /etc/resolv.conf is taken into account by the
resolver)
- existing search lines (from DHCPv4) being ignored
The current issue still has a potential (although lesser) similar
to the /etc/resolv.conf overwriting in #767071 to cause unexpected,
counter-intuitive and hard to diagnose system-wide breakage in DNS
resolution, because of DHCPv4 configuration being superseded and
ignored.
Please consider cherry-picking this upstream patch fixing the issue for
good:
http://git.remlab.net/gitweb/?p=ndisc6.git;a=commitdiff;h=d60853a5319bac0c3ec9a082bcaf850a5ab8d1d5
The cooperative merge hook mechanism has only been used in Debian
testing for 2 weeks ever now. It would make little sense to refrain at
this stage from merging changes to it, to try to prevent introducing
regressions into the archive, because it's already such a very new
system-wide change to Debian, with so little hindsight and testing on
new installs. There's no point in pacing and sticking with a half-fix.
Quite the contrary, we've had the broken /etc/resolv.conf overwriting
situation for years, and suffered the experience of breakage of freshly
installed systems, user frustration and embarrassment for Debian and
upstream. I cannot stress enough how delaying any further a proper fix
is only going to set up the next Debian release for more of the same;
and I think nobody wants that.
Please strongly consider uploading a new, fixed package version.
Best regards.
-- System Information:
Debian Release: 9.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages rdnssd depends on:
ii adduser 3.115
ii init-system-helpers 1.47
ii libc6 2.24-9
ii lsb-base 9.20161125
Versions of packages rdnssd recommends:
pn resolvconf <none>
Versions of packages rdnssd suggests:
ii ndisc6 1.0.3-2
-- Configuration Files:
/etc/rdnssd/merge-hook changed [not included]
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: ndisc6
Source-Version: 1.0.3-3
We believe that the bug you reported is fixed in the latest version of
ndisc6, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Bernhard Schmidt <[email protected]> (supplier of updated ndisc6 package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Wed, 01 Feb 2017 11:00:55 +0100
Source: ndisc6
Binary: ndisc6 ndisc6-udeb rdnssd rdnssd-udeb
Architecture: source
Version: 1.0.3-3
Distribution: unstable
Urgency: medium
Maintainer: Bernhard Schmidt <[email protected]>
Changed-By: Bernhard Schmidt <[email protected]>
Description:
ndisc6 - IPv6 diagnostic tools
ndisc6-udeb - IPv6 diagnostic tools (udeb)
rdnssd - IPv6 recursive DNS server discovery daemon
rdnssd-udeb - IPv6 recursive DNS server discovery daemon (udeb)
Closes: 853281
Changes:
ndisc6 (1.0.3-3) unstable; urgency=medium
.
* Import upstream fix to simplify rdnssd-merge-hook (Closes: #853281)
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ndisc6_1.0.3-3.dsc
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17b7e99040f28bd729e9d6bee51d8846 7540 net optional ndisc6_1.0.3-3.debian.tar.xz
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ndisc6_1.0.3-3_amd64.buildinfo
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