Comment 1 for bug 1777732

IMHO, typing 24 is a lot simpler than 255.255.255.0, at a min, CIDR is less typing.

But let's say a user isn't cidr/prefixlen savvy and only knows a netmask;

I think we could accept a netmask and convert to cidr in the form.

If we did convert it in the form, would the same user be confused?