public static int SubnetMaskToInt(IPAddress ip)
{
return SubnetMaskToInt((uint)ip.ToInt());
}
public IPGroup GetIPGroup(IPAddress ip)
{
var ipGroup = db.IPGroups.AsEnumerable().SingleOrDefault(x =>
(new IPAddress(x.SubnetMask.Address).ToInt() & ip.ToInt()) ==
(new IPAddress(x.IP.Address).ToInt() & new IPAddress(x.SubnetMask.Address).ToInt()));
return ipGroup;
}