func diff(existing mapset.Set, updated mapset.Set) (added []net.IP, removed []net.IP) {
addSlice := updated.Difference(existing).ToSlice()
removeSlice := existing.Difference(updated).ToSlice()
for _, ip := range addSlice {
added = append(added, net.ParseIP(ip.(string)))
}
for _, ip := range removeSlice {
removed = append(removed, net.ParseIP(ip.(string)))
}
return
}
