I tried to reproduce this, but my static ip isn't lost: root@lp1825470-d:~# grep . /etc/systemd/network/*br0* /etc/systemd/network/20-br0.netdev:[NetDev] /etc/systemd/network/20-br0.netdev:Name=br0 /etc/systemd/network/20-br0.netdev:Kind=bridge /etc/systemd/network/30-br0.network:[Match] /etc/systemd/network/30-br0.network:Name=br0 /etc/systemd/network/30-br0.network:[Network] /etc/systemd/network/30-br0.network:Address=1.2.3.4/24 /etc/systemd/network/30-br0.network:LinkLocalAddressing=none
root@lp1825470-d:~# ip a show br0 3: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether ca:9e:57:58:5f:c4 brd ff:ff:ff:ff:ff:ff inet6 fe80::c89e:57ff:fe58:5fc4/64 scope link valid_lft forever preferred_lft forever root@lp1825470-d:~# ip l add test type dummy root@lp1825470-d:~# ip l set up dev test root@lp1825470-d:~# ip l set test master br0 root@lp1825470-d:~# ip a show br0 3: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether ca:9e:57:58:5f:c4 brd ff:ff:ff:ff:ff:ff inet 1.2.3.4/24 brd 1.2.3.255 scope global br0 valid_lft forever preferred_lft forever inet6 fe80::c89e:57ff:fe58:5fc4/64 scope link valid_lft forever preferred_lft forever root@lp1825470-d:~# ip l del test root@lp1825470-d:~# ip a show br0 3: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether ca:9e:57:58:5f:c4 brd ff:ff:ff:ff:ff:ff inet6 fe80::c89e:57ff:fe58:5fc4/64 scope link valid_lft forever preferred_lft forever root@lp1825470-d:~# ip l add test type dummy root@lp1825470-d:~# ip l set up dev test root@lp1825470-d:~# ip l set test master br0 root@lp1825470-d:~# ip a show br0 3: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether ca:9e:57:58:5f:c4 brd ff:ff:ff:ff:ff:ff inet 1.2.3.4/24 brd 1.2.3.255 scope global br0 valid_lft forever preferred_lft forever inet6 fe80::c89e:57ff:fe58:5fc4/64 scope link valid_lft forever preferred_lft forever Are you using systemd-networkd to manage your anonymous bridge ip address? Or are you setting the ip address manually? You mention lxc, do you have a test case involving lxc that reproduces the bug? ** Changed in: systemd (Ubuntu Eoan) Status: In Progress => Incomplete ** Tags removed: ddstreet-next -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1825470 Title: systemd-networkd: Deconfigures bridge after last attached interface disconnects (ie: LXC) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1825470/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs