I just performed much the same upgrade on my second KVM host and the networking issue didn't happen again.
** Changed in: qemu (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1630642 Title: bridge mode network no longer functions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1630642/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs