Avahi is not the one actively withdrawing the address, this log message is a reaction to the address record being removed from the system.. it withdraws the mDNS "record" for this address.
Most likely theory for this is that DHCP is deciding to drop the address for some reason (lease expired and couldn't renew) or something else like that. In any case issue will be Network Manager related more than Avahi. ** Also affects: network-manager (Ubuntu) Importance: Undecided Status: New ** Changed in: avahi (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/1586528 Title: Avahi-daemon withdraws address record To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1586528/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs