rt_use           4999 net/pf.c       		ro->ro_rt->rt_use++;
rt_use            234 netatalk/ddp_output.c     ro->ro_rt->rt_use++;
rt_use           1070 netinet/if_ether.c 	    rt->rt_flags, rt->rt_refcnt, rt->rt_use, rt->rt_expire);
rt_use            685 netinet/ip_icmp.c 		ro.ro_rt->rt_use++;
rt_use            234 netinet/ip_output.c 			ro->ro_rt->rt_use++;
rt_use            404 netinet/ip_output.c 			ro->ro_rt->rt_use++;
rt_use            561 netinet6/ip6_output.c 		rt->rt_use++;