Based on the information you have provided so far I think that dnsmasq is the most likely culprit so I will reassign this issue over there.
If you get your hands on an affected machine then please let us know so that we can continue the investigation. ** Package changed: resolvconf (Ubuntu) => dnsmasq (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/993794 Title: Precise resolvconf+dnsmasq setup breaks logging in some wireless networks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/993794/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
