Bug#964438: closed by Michael Biebl <biebl at debian.org> (Re: Bug#964438: apt-listbugs: dns error when running from cron job)

[Oswald Buddenhagen]

guys, are you serious? it's fine that you document a dependency on a 
missing systemd feature for a clean solution (if you actually file a 
request upstream), but the bug is nonetheless in the current 
implementation of the apt-listbugs package, and can be worked around 
there (e.g., by polling the network for ten seconds before proceeding).