Second/VLAN interface on Loopback

[FauxShow]

Hey all,

I need an interface addressable on loopback for VPN. The webConfigurator or doesn't let you create VLAN interfaces bound to the loopback, and I don't know how to create one via command line. Standard FreeBSD would let you edit /etc/rc.conf but it's different with pfSense.

This is mainly for pfSense cloud instances, especially providers like VULTR that limit the MTU on their internal networking.

Any help here would be a great help. Thanks in advance!