Hello and thanks for you answer , I tried to enable post copy live migration on compute node, restarted the nova compute service on compute nodes but when I try to live migrate a vm I have the same issue: I loose a lot of packets. If I try with an instance which have a daemon which ping the default gateway, the live migration works fine and I do not loose packets. I think this is a big issue. I tried with rocky and queens with iptables_hybrid and both have the issue. :-( Ignazio -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20200427/ec866116/attachment.html>