Your message dated Fri, 25 Jun 2010 21:51:57 +0000
with message-id <[email protected]>
and subject line Bug#579752: fixed in netbase 4.42
has caused the Debian Bug report #579752,
regarding IPv6 support is added to /etc/hosts by netbase.postinst without asking
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
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--
579752: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=579752
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: netbase
Version: 4.41
Severity: normal
When netbase is upgraded it will add IPv6 lines to /etc/hosts, without
going through the usual process of asking the administrator for
confirmation.
This was apparently changed in 4.11, the relevant changelog entry is:
"IPv6 entries will be always added to /etc/hosts from now on".
This is an example of a change made by netbase.postinst:
diff --git a/hosts b/hosts
index 704eb6b..2e6b55b 100644
--- a/hosts
+++ b/hosts
@@ -1,2 +1,8 @@
127.0.0.1 localhost
109.74.193.250 v.nix.is v
+
+::1 localhost ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
And the relevant netbase.postinst rule:
update_hosts_file() {
if [ -f /etc/hosts ] && ! grep -qE "^::1[[:space:]]" /etc/hosts; then
cat >>/etc/hosts <<-EOF
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
EOF
fi
}
Instead of silently altering the file it should present a menu like
this during upgrade:
Configuration file `/etc/hosts'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : background this process to examine the situation
The default action is to keep your current version.
*** hosts (Y/I/N/O/D/Z) [default=N] ?
A similar bug (#97201) has been filed against this package before, but
that was a report of the clobbering of /etc/hosts, not a the
documented appending that's going on.
The reason I removed IPv6 support from my system in the first place is
because of bug #570914. Removing the lines from /etc/hosts likely did
nothing to help my system, and I'm not aware of any harm caused by
having them there.
I think this is a bug purely because packages should always ask before
they modify user-edited config files in /etc.
Maybe there should be a /etc/default/hosts that would have a config
option for IPv6="NO/YES". It would default to YES and
update_hosts_file() would only run if it was "YES".
Furthermore, /etc/hosts is not listed in the netbase.list or
netbase.conffiles. This made it hard to find what package was
responsible for it. dpkg -S didn't work, I had to grep
/var/lib/dpkg/info/.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (900, 'testing'), (800, 'unstable'), (700, 'stable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-x86_64-linode11 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages netbase depends on:
ii initscripts 2.87dsf-10 scripts for initializing and shutt
ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip
Versions of packages netbase recommends:
ii ifupdown 0.6.10 high level tools to configure netw
netbase suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: netbase
Source-Version: 4.42
We believe that the bug you reported is fixed in the latest version of
netbase, which is due to be installed in the Debian FTP archive:
netbase_4.42.dsc
to main/n/netbase/netbase_4.42.dsc
netbase_4.42.tar.gz
to main/n/netbase/netbase_4.42.tar.gz
netbase_4.42_all.deb
to main/n/netbase/netbase_4.42_all.deb
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.
Marco d'Itri <[email protected]> (supplier of updated netbase 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: SHA1
Format: 1.8
Date: Fri, 25 Jun 2010 22:17:24 +0200
Source: netbase
Binary: netbase
Architecture: source all
Version: 4.42
Distribution: unstable
Urgency: low
Maintainer: Marco d'Itri <[email protected]>
Changed-By: Marco d'Itri <[email protected]>
Description:
netbase - Basic TCP/IP networking system
Closes: 560238 579752 585708 586396
Changes:
netbase (4.42) unstable; urgency=low
.
* Stop setting net.ipv6.bindv6only=1 by default. (Closes: #560238)
* Remove /etc/hosts and /etc/networks on purge to please mindless
nitpickers and piuparts. (Closes: #585708)
* Do not add IPv6-related names to /etc/hosts on upgrades to allow
people to remove them and break their own systems. (Closes: #579752)
* Create /etc/hosts and /etc/networks if missing on the first install
(e.g. when installing with debootstrap).
* etc-services: added dcap (22125/tcp), gsidcap (22128/tcp).
(Closes: #586396)
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