def find_interconnect_ports(self):
        """Find the internal veth or patch ports. """

        phy_port_list = self.ext_br_obj.get_port_name_list()
        int_port_list = self.integ_br_obj.get_port_name_list()
        for port in phy_port_list:
            # Use get Interface  xxx type
            is_patch = ovs_lib.is_patch(self.root_helper, port)
            if is_patch:
                # Get the peer for this patch
                peer_port = ovs_lib.get_peer(self.root_helper, port)
                if peer_port in int_port_list:
                    return port, peer_port
        # A solution is needed for veth pairs also, fixme(padkrish)
        # ip_wrapper.get_devices() returns all the devices
        # Pick the ones whose type is veth (?) and get the other pair
        # Combination of "ethtool -S xxx" command and "ip tool" command.
        return None, None
Find the internal veth or patch ports.