rtm_use           181 net/route.h    	int	rtm_use;	/* deprecated use rtm_rmx->rmx_pksent */
rtm_use           182 net/route.h    #define rtm_fmask	rtm_use	/* bitmask used in RTM_CHANGE message */
rtm_use           370 net/rtsock.c   			rtm->rtm_use = 0;
rtm_use           844 net/rtsock.c   		rtm->rtm_use = 0;