Unpacking replacement nav ...
dpkg: warning - unable to delete old file `/etc/nav/cricket-config/router-interfaces-snmpv1-and-giga':  Directory not empty
dpkg: warning - unable to delete old file `/etc/nav/cricket-config/switch-ports-snmpv1-and-giga': Dire ctory not empty
Errors were encountered while processing:
 /var/cache/apt/archives/libnetaddr-ip-perl_3.14-2_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Ack!  Something bad happened while installing packages.  Trying to recover:
Setting up python2.3-gammu (0.15-1~bpo.1) ...
dpkg: dependency problems prevent configuration of nav:
 nav depends on libnetaddr-ip-perl; however:
  Package libnetaddr-ip-perl is not installed.
dpkg: error processing nav (--configure):
 dependency problems - leaving unconfigured
Setting up python-gammu (0.15-1~bpo.1) ...
Errors were encountered while processing:
 nav
Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done