[MonoTouch] Can't determine IP address on iPhone device

[jowi]

Another day, another question :) i've been using the (simplified) code below
to determine the ip address of the device (or simulator). This works
perfectly on the ipad/iphone simulator, and also on the real ipad device,
but not on the iphone.

///first is to get the hostname/
string host = Dns.GetHostName();
  
///then i check if i'm on a device or a sim, if on a device, i add the
.local to the name/
if( IsDevice ) host = host + ".local";

///get the list of ip adresses for this host/		
IPAddress[] localIPs = Dns.GetHostAddresses(host);
       
On the iphone device, the array only contains a short hex address and the
127.0.0.1 address.
On the ipad device, this also contains the actual ip address.

Again, on the simulator this works perfectly.

Environment: Xcode 4.1, MD 2,8, MT 4.2.2
iPhone: iOS 4.2.1

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