nl_get_multicast_id
mcid = nl_get_multicast_id(nl_sock, nl_cb, THERMAL_GENL_FAMILY_NAME,
mcid = nl_get_multicast_id(nl_sock, nl_cb, THERMAL_GENL_FAMILY_NAME,
mcast_id = nl_get_multicast_id(&drv, THERMAL_GENL_FAMILY_NAME,