Comment 2 for bug 1993193

A small part of what is going on here is that the UI presents a different configuration model to what netplan exposes. Netplan doesn't have the concept of "IPv4 configuration", it just has addresses (which can be v4 or v6) and nameservers. Maybe it would make sense to move the UI in that direction? So you'd just say "add address" and let the user type either a ipv4 or ipv6 address. But changing the UI like this is a slow process of course (on the third hand, if we want to use subiquity views as a basis for "netplan edit" we should probably have the views reflect netplans actual model...)