ok( my @devs = ip::devices_up(), 'devices_up' );
diag dump( @devs );
-ok( ip::default_route_dev(), 'default_route_dev' );
+like( ip::default_route_dev(), qr/eth/, 'default_route_dev' );
ok( my $int = ip::to_int( '127.0.0.1' ), 'to_int' );
ok( my $ip = ip::from_int( $int ), 'from_int' );