[BUG] IPv6 support

[cachebag]

IPv6 as a field exists

nmrs/nmrs/src/api/models.rs

Line 842 in 0d61e96

pub ip6_address: Option<String>,

But it is documented as unimplemented.

Our current approach is fine for avoiding breaking changes but best to just implement it and merge to 2.x-dev.

[cachebag]

We're also gonna implement retrieval in wired/wireless connections and also wire into relevant structs