[pkg-dhcp-devel] Bug#642544: isc-dhcp-client: dhclient-script is broken for read-only root

[Scott Moser]

Package: isc-dhcp-client
Version: 4.1.1-P1-17ubuntu9
Severity: normal

This is ubuntu bug 857524 [http://pad.lv/857524].

debian/dhclient-script.linux will not work with read-only root.

For a read-only root to work, and support dhclient-script writing to
/etc/resolv.conf, then /etc/resolv.conf would have to be a symlink to a
writeable location (ie, /run or /var/run).

Currently, that will not work as dhclient-script will write to
/etc/resolv.conf.dhclient-script.new which will fail.  It should, instead
write directly to /etc/resolv.conf, following the symlink if it is.

This bug has been raised against Ubuntu, and a patch is attached there for
Ubuntu.  I would be willing to write a patch to fix this in debian, but
there are many changes in ubuntu's debian/dhclient-script.linux that may
also be desirable, so I'm opting to not do that, but suggest reviewing the
full diff against Ubuntu's script.

-- System Information:
Debian Release: wheezy/sid
  APT prefers oneiric-updates
  APT policy: (500, 'oneiric-updates'), (500, 'oneiric-security'), (500, 'oneiric')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-11-generic (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages isc-dhcp-client depends on:
ii  debianutils           4.0.2              Miscellaneous utilities specific t
ii  iproute               20110315-1build1   networking and traffic control too
ii  isc-dhcp-common       4.1.1-P1-17ubuntu9 common files used by all the isc-d
ii  libc6                 2.13-20ubuntu2     Embedded GNU C Library: Shared lib

isc-dhcp-client recommends no packages.

Versions of packages isc-dhcp-client suggests:
ii  apparmor    2.7.0~beta1+bzr1774-1ubuntu1 User-space parser utility for AppA
ii  avahi-autoi 0.6.30-4ubuntu1              Avahi IPv4LL network address confi
ii  resolvconf  1.48ubuntu1                  name server information handler

-- no debconf information