Bug#1030359: debian-edu-router-config fails to install

[Adrian Bunk <bunk@debian.org>]

Package: debian-edu-router-config
Version: 2.12.1
Severity: serious

https://piuparts.debian.org/sid/fail/debian-edu-router-config_2.12.1.log

...
  Setting up debian-edu-router-config (2.12.1) ...
  cat: /sys/class/net/eth0/carrier: No such file or directory
  invoke-rc.d: could not determine current runlevel
  invoke-rc.d: policy-rc.d denied execution of stop.
  [ESC][33mWARNING: [ESC][1mSkipping network setup; not enough usable network interfaces available.[ESC][m
  Run 'dpkg-reconfigure debian-edu-router-config' to (re-)configure networking.
  invoke-rc.d: could not determine current runlevel
  invoke-rc.d: policy-rc.d denied execution of start.
  debian-edu-router-config: Networking 'ifupdown' reconfigured and restarted.
  invoke-rc.d: could not determine current runlevel
  invoke-rc.d: policy-rc.d denied execution of restart.
  debian-edu-router-config: Firewall 'uif' reconfigured and restarted.
  invoke-rc.d: unknown initscript, /etc/init.d/dnsmasq not found.
  invoke-rc.d: could not determine current runlevel
  debian-edu-router-config: DNS/DHCP service 'dnsmasq' reconfigured and restarted.
  /var/lib/dpkg/info/debian-edu-router-config.postinst: line 1358: /etc/sysctl.d/30-debian-edu-router-config.conf: No such file or directory
  dpkg: error processing package debian-edu-router-config (--configure):
   installed debian-edu-router-config package post-installation script subprocess returned error exit status 1
  Processing triggers for libc-bin (2.36-8) ...
  Errors were encountered while processing:
   debian-edu-router-config
  E: Sub-process /usr/bin/dpkg returned an error code (1)