UniFi on the UDM is a little archaic with how it uses its default VLAN. I really hope they get to improving this soon.

Zachariah’s link to lazyadmin.nl is a good resource.

Note that IP addresses and subnets are not the same thing, and I think your original post conflates them somewhat.

Man, it seems like she is getting more useless by the day. It’s really sad how much the development of Siri has been left to flounder since its introduction.