Hello
I finally found the issue :
I forgot to say I have a static route to ovirt configured on the hosts (it's not the
default route)
The issue was that when I added the static route using static-route.yml + nmstatectl
(
https://ovirt.org/documentation/administration_guide/index.html#proc-Addi...),
the route did not match the main table-id and the packets did not take the route.
I had to edit manually the route with nmstatectl edit to change the table-id to the right
one
I Hope it will help someone