Hi, I am using neutron 19.1 and ovn 21.09. There is a strange behavior I am seeing on compute nodes that ovs logs shows below logs 2022-02-23T06:14:06.426Z|00226|bridge|WARN|could not open network device tapea0dca9a-32 (No such device) 2022-02-23T06:14:06.428Z|00227|bridge|WARN|could not open network device tapaeaa1749-b5 (No such device) 2022-02-23T06:14:06.429Z|00228|bridge|WARN|could not open network device tap53f06ea0-70 (No such device) 2022-02-23T06:14:06.431Z|00229|bridge|WARN|could not open network device tap724cf0cc-7b (No such device) 2022-02-23T06:14:06.433Z|00230|bridge|WARN|could not open network device tap18864125-6d (No such device) In the ovs-vsctl show I also see alot of ports with these status. Port tapaeaa1749-b5 Interface tapaeaa1749-b5 error: "could not open network device tapaeaa1749-b5 (No such device)" Port tap18864125-6d Interface tap18864125-6d error: "could not open network device tap18864125-6d (No such device)" Port tap54415fc0-dd Interface tap54415fc0-dd error: "could not open network device tap54415fc0-dd (No such device)" I have checked in neutron port list and there is no port found for these tap interfaces. openstack port list --long | grep -i 18864125-6d I have checked in database in ports table, there is also no ports there with these ids. mysql> select * from ports where id like '%18864125-6d%'; These ports even show on compute node even if there is no instance running on it. Are these stale ports ? If yes, is there any tool or utility to run audit and delete these ports ? Ammad