fib6_lookup_rt
rt = fib6_lookup_rt(fibnum, paddr, 0, NHR_UNLOCKED, &rnd);
rt = fib6_lookup_rt(r->fib, &fle6->f.r.dst.r_dst6, 0, NHR_NONE, &rnd);
rt = fib6_lookup_rt(r->fib, &fle6->f.r.src.r_src6, 0, NHR_NONE, &rnd);
rt = fib6_lookup_rt(fibnum, dst6, scopeid, NHR_UNLOCKED, &rnd);
struct rtentry *fib6_lookup_rt(uint32_t fibnum, const struct in6_addr *dst6,
rt = fib6_lookup_rt(ti->data, &tent->k.addr6, 0, 0, &rnd);
rt = fib6_lookup_rt(fibnum, a, 0, NHR_NONE, &rnd);