Comment 0 for bug 1948452

Release version:
Neutron: stable/Ussuri
(Open vSwitch) 2.11.1

on searching the issue i see this raised earlier on Mirantis Openstack,
https://bugs.launchpad.net/mos/+bug/1711637

As mentioned in the link above, this is leading to excessive logging at OVS,

2021-10-22T03:40:02.728Z|311606|coverage(revalidator631)|INFO|Skipping details of duplicate event coverage for hash=4a9bb48e
2021-10-22T03:43:50.650Z|123897195|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:51.017Z|123897196|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:51.843Z|123897197|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.208Z|123897198|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.487Z|123897199|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.856Z|123897200|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:54.179Z|123897201|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:54.622Z|123897202|poll_loop|INFO|Dropped 17 log messages in last 4728 seconds (most recently, 4726 seconds ago) due to excessive rate