How are eth0/eth1/bond0 configured? Do you use netplan and networkd? Do you use ifupdown?
Can you paste the output of $ networkctl? Copies of the configuration e.g.: /etc/network/interfaces /etc/network/interfaces.d/* /etc/netplan/* /run/systemd/network/* /etc/systemd/network/* -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1727301 Title: 229-4ubuntu20 added ARP option breaks existing bonding interfaces To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1727301/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs