I was running into this same issue. Similar to heynnema's answer, but more specifically setting the interface to optional allowed the VM to start up (possibly without an IP from DHCP). For instance my netplan config now looks like:
I was running into this same issue. Similar to heynnema's answer, but more specifically setting the interface to optional allowed the VM to start up (possibly without an IP from DHCP). For instance my netplan config now looks like: