On Thu, Jan 22, 2015 at 08:54:11PM +0100, Federico Beffa wrote: Hi, I'm working on libupnp. The 'check phase gives the following error: Initializing UPnP ... ** ERROR UpnpInit(): -208 UPNP_E_SOCKET_ERROR FAIL: test_init In spite of this, if I "guix environment" and run the test binary it succeeds: Initializing UPnP ... UPnP Initialized OK ip=192.168.0.5, port=49152 I suppose that sockets can't be accessed during the build phase. Is that correct? local sockets (AF_UNIX) can be. But the only Internet sockets accessible are those on the local (lo) interface. All other interfaces are disabled. J' -- PGP Public key ID: 1024D/2DE827B3 fingerprint = 8797 A26D 0854 2EAB 0285 A290 8A67 719C 2DE8 27B3 See http://sks-keyservers.net or any PGP keyserver for public key.