Hello All,
We've just updated openstack centos7 fron stein to train.
Unfortunately live migrations works but vm lost a lot of pings after migration.
We also applied the following patches but the do not solve:



https://review.opendev.org/c/openstack/neutron/+/640258/
https://review.opendev.org/c/openstack/neutron/+/753314/
https://review.opendev.org/c/openstack/neutron/+/766277/

https://review.opendev.org/c/openstack/nova/+/742180/12
https://review.opendev.org/c/openstack/nova/+/747454/4


After that we also tried to apply https://review.opendev.org/c/openstack/nova/+/602432 but the issue remains the same.

Please, anyone can help us ?
Ignazio