I saw this issue in 15.10 and reported it to the upstream Debian maintainer, see [1]. The fix attached there is now applied to the upstream ifupdown git repository.
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819287 ** Bug watch added: Debian Bug tracker #819287 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819287 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1416793 Title: ifquery segfaults if /run/network/ifstate file is not found Status in ifupdown package in Ubuntu: Confirmed Bug description: This makes the [email protected] systemd unit file sad. version 0.7.48.1ubuntu6 [amd64] command: ifquery --state eth0 after a mkdir /run/network/ and a touch /run/network/ifstate the command above runs, but produces no output. Thanks for looking into this! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1416793/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

