def _delete_arp_cache_for_internal_port(self, subnet_id):
        arp_delete = set()
        for arp_entry in self._pending_arp_set:
            if subnet_id == arp_entry.subnet_id:
                arp_delete.add(arp_entry)
        self._pending_arp_set -= arp_delete
Function to delete the cached arp entries.
dataset/ETHPy150Open openstack/neutron/neutron/agent/l3/dvr_local_router.py/DvrLocalRouter._delete_arp_cache_for_internal_port