Comment 39 for bug 1951586

>Imager does not fill in the 'regulatory-domain' field in network-config because the last time we tried that the existing Ubuntu editions in the Imager repository did not support the field yet, and reacted badly to it. As in error'ing out instead of just ignoring.

Might want to reconsider that position given the latest release of 22.04 posted on 2023-02-17
http://cdimage.ubuntu.com/ubuntu/releases/22.04/release/ubuntu-22.04.2-preinstalled-server-arm64+raspi.manifest contains netplan.io 0.105-0ubuntu2~22.04.1 which is offered by Imager as an install option.