[Resolvconf-devel] Bug#651801: resolvconf: /etc/resolv.conf is a broken link after reboot

[Eike von Seggern]

Package: resolvconf
Version: 1.62
Followup-For: Bug #651801

Dear Thomas,

I have the same issue as Teodor:

After a reboot my wireless interface is up and working but
/etc/resolv.conf points to /run/resolvconf/resolv.conf, which does not
exist.

After a reboot the layout of /etc/resolvconf/ is

# ls -Rl /etc/resolvconf/
/etc/resolvconf/:
total 16
-rw-r--r-- 1 root root  116 Aug 13  2009 interface-order
drwxr-xr-x 2 root root 4096 Dec 12 09:40 resolv.conf.d
lrwxrwxrwx 1 root root   15 Jun 20 12:34 run -> /run/resolvconf
drwxr-xr-x 2 root root 4096 Sep 22 09:51 update-libc.d
drwxr-xr-x 2 root root 4096 Dec 12 09:40 update.d

/etc/resolvconf/resolv.conf.d:
total 12
-rw-r--r-- 1 root root   0 Aug  9  2006 base
-rw-r--r-- 1 root root 151 Aug  9  2006 head
-rw-r--r-- 1 root root 118 Nov 18  2009 original
-rw-r--r-- 1 root root 220 Jun  1  2011 tail

/etc/resolvconf/update-libc.d:
total 4
-rwxr-xr-x 1 root root 188 Sep  4 17:08 fetchmail

/etc/resolvconf/update.d:
total 16
-rwxr-xr-x 1 root root 3601 Jan 12  2011 bind
-rwxr-xr-x 1 root root 3195 Dec  6  2008 dnscache
-rwxr-xr-x 1 root root 5095 Nov 30 19:05 libc

and /run/resolvconf/

# ls -Rl /run/resolvconf/
/run/resolvconf/:
total 0
-rw-r--r-- 1 root root  0 Dec 12 21:20 enable-updates
drwxr-xr-x 2 root root 40 Dec 12 21:37 interface

/run/resolvconf/interface:
total 0


I think the problem is that /sbin/resolvconf silently does nothing if it
is called with empty input like:
    # echo -n | resolvconf -a wlan0
and /run/resolvconf/resolv.conf does not exist or contains no
`nameserver' directives.

However, if /run/resolvconf/resolv.conf does contain a `nameserver'
directive
    # echo -n | resolvconf -a wlan0
causes /run/resolvconf/resolv.conf to be rewritten.

I hope that helps in tracking down this problem.

Kind regards
Eike


-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (600, 'testing'), (204, 'unstable'), (151, 'stable'), (101, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.1.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages resolvconf depends on:
ii  debconf [debconf-2.0]  1.5.41       
ii  initscripts            2.88dsf-13.13
ii  lsb-base               3.2-28       

resolvconf recommends no packages.

resolvconf suggests no packages.

-- debconf information:
* resolvconf/linkify-resolvconf: true
  resolvconf/reboot-recommended-after-removal:
* resolvconf/downup-interfaces:
  resolvconf/link-tail-to-original: false