retrieving local ip address

How do I you retrieve the IP Address of the local host using asio? 
boost::asio::ip::hostname() only returns the host's name but I want an 
ip address (not loopback 127.0.0.1).

I also tried to get the local_endpoint() from a udp socket but by 
accessing endpoint's address() I get a "the specified class was not 
found" exception.

Any ideas?

Themis


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