I think there's something wrong with function NetworkInterface::Map NetworkInterface::map(bool ipOnly, bool upOnly)
when checking pAddress->Flags, if you are using poco lib compiled for
win vista and later, on a machine with winxp the function
GetAdaptersAddresses does its job but pAddress->Flags it's not
initialized so even if the network information are extracted correctly,
the code:
if (ifIndex == 0) continue;
will bypass all the networks

I think there's another problem when get subnetmask of an Ipv4 on windows xp because getBroadcastAddress can't get the correct prefix