find_prune_entry
static struct ptable * find_prune_entry(u_int32_t vr, struct ptable *pt);
if (find_prune_entry(vr->al_addr, g->gt_pruntbl) == NULL) {
if ((pt = find_prune_entry(src, g->gt_pruntbl)) != NULL) {
if (find_prune_entry(vr->al_addr, g->gt_pruntbl) == NULL) {