fib4_lookup_rt
rt = fib4_lookup_rt(fibnum, addr, 0, NHR_UNLOCKED, &rnd);
rt = fib4_lookup_rt(r->fib, fle->f.r.r_dst, 0, NHR_NONE, &rnd);
rt = fib4_lookup_rt(r->fib, fle->f.r.r_src, 0, NHR_NONE, &rnd);
rt = fib4_lookup_rt(fibnum, dst, scopeid, NHR_UNLOCKED, &rnd);
struct rtentry *fib4_lookup_rt(uint32_t fibnum, struct in_addr dst, uint32_t scopeid,
rt = fib4_lookup_rt(da->fibnum, da->dst.sin_addr, 0, NHR_UNLOCKED,
rt = fib4_lookup_rt(ti->data, tent->k.addr, 0, 0, &rnd);
rt = fib4_lookup_rt(fibnum, a, 0, NHR_NONE, &rnd);