NetDev *netdev_ref(NetDev *netdev);
DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
-#define _cleanup_netdev_unref_ _cleanup_(netdev_unrefp)
int netdev_get(Manager *manager, const char *name, NetDev **ret);
int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *newlink);