sd_rtnl_message_handler_t callback,
void *userdata) {
struct match_callback *c;
assert_return(rtnl, -EINVAL);
assert_return(callback, -EINVAL);
sd_rtnl_message_handler_t callback,
void *userdata) {
struct match_callback *c;
assert_return(rtnl, -EINVAL);
assert_return(callback, -EINVAL);