Support IPv6 cidr ranges in ip whitelist for API

Simonses1

Support confirm that the api whitelist feature doesn’t currently support IPv6 cidr addresses. ISPs will always assign a range and typically you wouldn’t use a Nat hide so supporting a range is needed for IPv6

Thanks!

To limit api access to own ranges

RoxyRoxyRoxy

Thanks for bumping this, we'll take a look at getting these supported!