[Android] 기기에서 IP 가져오기 (NetworkInterface 사용)

아래와 같이 하면 IPv4 address 를 얻을 수 있습니다.

foreach(NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
{
   if(ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 || ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
   {
       Console.WriteLine(ni.Name);
       foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
       {
           if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
           {
               Console.WriteLine(ip.Address.ToString());
           }
       }
   }  
}

출처 : https://stackoverflow.com/questions/9855230/how-do-i-get-the-network-interface-and-its-right-ipv4-address