ipf_fastroute
ipf_fastroute(mc, &mc, fin, fdp);
(void) ipf_fastroute(fin->fin_m, mp, fin, NULL);
ipf_fastroute(fin->fin_m, mp, fin, fdp);
extern int ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *);
return (ipf_fastroute(m, &m, &fnew, NULL));