Hard to admit but we had a totally different culprit: A conflict between hardware clock and NTP sync caused dhclient dropping the interface probably »believing« lease timeout being reached.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1775131 Title: Ubuntu 18.04 networking issue (connection drops after approx. 15 minutes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/networkd-dispatcher/+bug/1775131/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
