Enumeration interfaces = java.net.NetworkInterface.getNetworkInterfaces(); for(;interfaces.hasMoreElements();){ NetworkInterface iface = interfaces.nextElement(); Log.i(appTag, "My interface is "+iface.getDisplayName()); Enumeration addrs = iface.getInetAddresses(); for(;addrs.hasMoreElements();) { InetAddress addr = addrs.nextElement(); Log.i(appTag, " IP address is "+addr); }

        }

/type:code

I/WhatIsMyIp( 4075): My interface is lo
I/WhatIsMyIp( 4075):   IP address is /127.0.0.1
I/WhatIsMyIp( 4075): My interface is rmnet0
I/WhatIsMyIp( 4075):   IP address is /25.128.65.151

Android phones are assigned a routable address!

$ nmap -PN 25.128.65.151

Starting Nmap 4.62 ( http://nmap.org ) at 2008-11-01 17:23 PDT
Interesting ports on 25.128.65.151:
Not shown: 1714 closed ports
PORT    STATE    SERVICE
225/tcp filtered unknown

Nmap done: 1 IP address (1 host up) scanned in 10.944 seconds

One port is open. I wonder if an android app can open a port to have inbound traffic initiated to the phone. If so, a distributed hash table between running android phones could be built.