Nest: Get hash chain is not deprecated, it is still useful

void fib_init(struct fib *f, pool *p, uint addr_type, uint node_size, uint node_offset, uint hash_order, fib_init_fn init);

void *fib_find(struct fib *, const net_addr *);	/* Find or return NULL if doesn't exist */

void *fib_get_chain(struct fib *f, const net_addr *a) DEPRECATED; /* Find first node in linked list from hash table */

void *fib_get_chain(struct fib *f, const net_addr *a); /* Find first node in linked list from hash table */

void *fib_get(struct fib *, const net_addr *);	/* Find or create new if nonexistent */

void *fib_route(struct fib *, const net_addr *); /* Longest-match routing lookup */

void fib_delete(struct fib *, void *);	/* Remove fib entry */

       match with the smallest matching src prefix. */

    for (fn = fib_get_chain(&t->fib, (net_addr *) n); fn; fn = fn->next)

    {

      /* TODO: This may be more effectively done by searching in the redblack tree. */

      net_addr_ip6_sadr *a = (void *) fn->addr;

      if (net_equal_dst_ip6_sadr(n, a) &&