The default will remain, implicit, RequiredForOnline=yes. And it will be up to netplan / cloud metdata / cloud-init, to pass via netplan whatever the right syntax there needs to be to tell networkd that RequiredForOnline needs to be relaxed for ipv4, or ipv6, or for the whole interface altogether.
The default will remain, implicit, RequiredForOnli ne=yes. And it will be up to netplan / cloud metdata / cloud-init, to pass via netplan whatever the right syntax there needs to be to tell networkd that RequiredForOnline needs to be relaxed for ipv4, or ipv6, or for the whole interface altogether.