ifg_refcnt       1602 net/if.c       	ifg->ifg_refcnt = 0;
ifg_refcnt       1651 net/if.c       	ifg->ifg_refcnt++;
ifg_refcnt       1691 net/if.c       	if (--ifgl->ifgl_group->ifg_refcnt == 0) {
ifg_refcnt        442 net/if.h       	u_int				 ifg_refcnt;
ifg_refcnt        823 netinet/ip_carp.c 		ifg->ifg_refcnt++;	/* keep around even if empty */