Thank you for taking the time to report this bug and helping to make Ubuntu better.
I presume you're using Network Manager to manage the connection to your phone over Bluetooth? Assuming this is so, I think this needs to be looked at from the perspective of Network Manager in the first instance. ** Package changed: dhcp3 (Ubuntu) => network-manager (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dhcp3 in Ubuntu. https://bugs.launchpad.net/bugs/1470997 Title: dhclient tries to send request over non-existent interface, floods syslog To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1470997/+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