netplan IP addresses adding

When adding a virtual host with a dedicated IPv6 address, this address is added in an array form:

[ address] That works for one address, but at multiple, netplan might complain about an unknown ':' in there and refuses to apply.

Solution: I manually change the 50-cloud-init.yaml to follow the standard here: https://netplan.io/examples

so to create a block with addresses: - 9.0.0.9/24 - 10.0.0.10/24 - 11.0.0.11/24 (IPv6 address in my case). I keep the /64 virtualmin currently adds.

Then netplan apply, and all works again.

Possibly this could be changed in the IP script for U18?