How unique is the ethernet network adapter ID in WinRT? It is derived from the Mac address?
IReadOnlyCollection<Windows.Networking.Connectivity.ConnectionProfile> profiles = Windows.Networking.Connectivity.NetworkInformation.GetConnectionProfiles();
Windows.Networking.Connectivity.NetworkAdapter na = profiles.First<Windows.Networking.Connectivity.ConnectionProfile>().NetworkAdapter;
string nid = na.NetworkAdapterId.ToString();