set_forwarding
if (!ASSERT_OK(set_forwarding(true), "enable forwarding"))
if (!ASSERT_OK(set_forwarding(false), "disable forwarding"))
if (!ASSERT_OK(set_forwarding(false), "disable forwarding"))
if (!ASSERT_OK(set_forwarding(false), "disable forwarding"))
err = set_forwarding(false);
err = set_forwarding(true);