namespace System.Net.Sockets { public enum ProtocolFamily { AppleTalk = 16, Atm = 22, Banyan = 21, Ccitt = 10, Chaos = 5, Cluster = 24, DataKit = 9, DataLink = 13, DecNet = 12, Ecma = 8, FireFox = 19, HyperChannel = 15, Ieee12844 = 25, ImpLink = 3, InterNetwork = 2, InterNetworkV6 = 23, Ipx = 6, Irda = 26, Iso = 7, Lat = 14, Max = 29, NetBios = 17, NetworkDesigners = 28, NS = 6, Osi = 7, Pup = 4, Sna = 11, Unix = 1, Unknown = -1, Unspecified = 0, VoiceView = 18 } }