Fix an API accident with net.IPFamily
Fix an API accident with net.IPFamily

net.IPv4 had type net.IPFamily, but net.IPv6 was an untyped string.
This is obviously wrong. Fortunately it would have been difficult for
anyone to use this constant in a way that would break by fixing this.
(Also, AFAIK no one is using this code anyway.)

kubernetes/utils,kubernetes/utils