interfaceMac :: String -> IO String
interfaceMac interface = strip <$> getFileContents (sysfsnet </> interface </> "address")
interfaceMac :: String -> IO String
interfaceMac interface = strip <$> getFileContents (sysfsnet </> interface </> "address")
interfaceMac interface = strip <$> getFileContents (sysfsnet </> interface </> "address")