public static NetworkInterface[] ImplGetAllNetworkInterfaces() { Dictionary <string, MacOsNetworkInterface> dictionary = new Dictionary <string, MacOsNetworkInterface>(); IntPtr intPtr; if (MacOsNetworkInterface.getifaddrs(out intPtr) != 0) { throw new SystemException("getifaddrs() failed"); } try { IntPtr intPtr2 = intPtr; while (intPtr2 != IntPtr.Zero) { ifaddrs ifaddrs = (ifaddrs)Marshal.PtrToStructure(intPtr2, typeof(ifaddrs)); IPAddress ipaddress = IPAddress.None; string ifa_name = ifaddrs.ifa_name; int index = -1; byte[] array = null; NetworkInterfaceType networkInterfaceType = NetworkInterfaceType.Unknown; if (ifaddrs.ifa_addr != IntPtr.Zero) { sockaddr sockaddr = (sockaddr)Marshal.PtrToStructure(ifaddrs.ifa_addr, typeof(sockaddr)); if (sockaddr.sa_family == 30) { sockaddr_in6 sockaddr_in = (sockaddr_in6)Marshal.PtrToStructure(ifaddrs.ifa_addr, typeof(sockaddr_in6)); ipaddress = new IPAddress(sockaddr_in.sin6_addr.u6_addr8, (long)((ulong)sockaddr_in.sin6_scope_id)); } else if (sockaddr.sa_family == 2) { ipaddress = new IPAddress((long)((ulong)((sockaddr_in)Marshal.PtrToStructure(ifaddrs.ifa_addr, typeof(sockaddr_in))).sin_addr)); } else if (sockaddr.sa_family == 18) { sockaddr_dl sockaddr_dl = (sockaddr_dl)Marshal.PtrToStructure(ifaddrs.ifa_addr, typeof(sockaddr_dl)); array = new byte[(int)sockaddr_dl.sdl_alen]; Array.Copy(sockaddr_dl.sdl_data, (int)sockaddr_dl.sdl_nlen, array, 0, Math.Min(array.Length, sockaddr_dl.sdl_data.Length - (int)sockaddr_dl.sdl_nlen)); index = (int)sockaddr_dl.sdl_index; int sdl_type = (int)sockaddr_dl.sdl_type; if (Enum.IsDefined(typeof(MacOsArpHardware), sdl_type)) { MacOsArpHardware macOsArpHardware = (MacOsArpHardware)sdl_type; switch (macOsArpHardware) { case MacOsArpHardware.PPP: networkInterfaceType = NetworkInterfaceType.Ppp; break; case MacOsArpHardware.LOOPBACK: networkInterfaceType = NetworkInterfaceType.Loopback; array = null; break; default: if (macOsArpHardware != MacOsArpHardware.ETHER) { if (macOsArpHardware != MacOsArpHardware.FDDI) { if (macOsArpHardware == MacOsArpHardware.ATM) { networkInterfaceType = NetworkInterfaceType.Atm; } } else { networkInterfaceType = NetworkInterfaceType.Fddi; } } else { networkInterfaceType = NetworkInterfaceType.Ethernet; } break; case MacOsArpHardware.SLIP: networkInterfaceType = NetworkInterfaceType.Slip; break; } } } } MacOsNetworkInterface macOsNetworkInterface = null; if (!dictionary.TryGetValue(ifa_name, out macOsNetworkInterface)) { macOsNetworkInterface = new MacOsNetworkInterface(ifa_name); dictionary.Add(ifa_name, macOsNetworkInterface); } if (!ipaddress.Equals(IPAddress.None)) { macOsNetworkInterface.AddAddress(ipaddress); } if (array != null || networkInterfaceType == NetworkInterfaceType.Loopback) { macOsNetworkInterface.SetLinkLayerInfo(index, array, networkInterfaceType); } intPtr2 = ifaddrs.ifa_next; } } finally { MacOsNetworkInterface.freeifaddrs(intPtr); } NetworkInterface[] array2 = new NetworkInterface[dictionary.Count]; int num = 0; foreach (NetworkInterface networkInterface in dictionary.Values) { array2[num] = networkInterface; num++; } return(array2); }