Verification-done with netplan.io 0.40.1~18.04.2 on bionic: I have verified that with dhcp4: no, dhcp6: no, accept-ra: no on the bridge interface and not static addresses set, the interface is brought up correctly by networkd.
root@working-guinea:~# cat /etc/netplan/50-cloud-init.yaml network: version: 2 ethernets: eth0: match: macaddress: 00:16:3e:7e:43:4a dhcp4: no bridges: br0: addresses: [] interfaces: [ eth0 ] dhcp4: no dhcp6: no accept-ra: no root@working-guinea:~# ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether a2:13:bd:22:ec:8b brd ff:ff:ff:ff:ff:ff 23: eth0@if24: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UP mode DEFAULT group default qlen 1000 link/ether 00:16:3e:7e:43:4a brd ff:ff:ff:ff:ff:ff link-netnsid 0 root@working-guinea:~# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether a2:13:bd:22:ec:8b brd ff:ff:ff:ff:ff:ff inet6 fe80::a013:bdff:fe22:ec8b/64 scope link valid_lft forever preferred_lft forever 23: eth0@if24: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UP group default qlen 1000 link/ether 00:16:3e:7e:43:4a brd ff:ff:ff:ff:ff:ff link-netnsid 0 ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1736975 Title: netplan does not bring up anonymous bridge on boot To manage notifications about this bug go to: https://bugs.launchpad.net/netplan/+bug/1736975/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs