HFIRST
for (phyi = HFIRST(&ihash_tbl, &ifindex);
for (ifp = HFIRST(&ahash_tbl, &addr); ifp != NULL;
for (ifp = HFIRST(&bhash_tbl, &addr); ifp != NULL;
for (ifp = HFIRST(&nhash_tbl, name); ifp != NULL;
for (ifp = HFIRST(&ahash_tbl, &addr); ifp != NULL;
for (ifp = HFIRST(&ahash_tbl, &addr); ifp != NULL;
for (phyi = HFIRST(&ihash_tbl, &index); phyi != NULL;