I am looking for this as well, trying to connect from the host to my containers without being forced to kill netplan and install ifupdown on the host.
Has anyone figured out how to create a macvlan bridge via netplan?
Edit: Well, here’s the nub-- you can’t! Gotta use ifupdown.
https://bugs.launchpad.net/netplan/+bug/1664847
Edit 2: OK, so the trick here is that netplan and ifupdown can coexist. So you just install ifupdown, edit /etc/network/interfaces to add the MACVLAN bridge, ifup the bridge, and boom everything works, you can ping from containers to host and vice-versa.