Hi thank you for answer, on the ovirt-engine, for what i know i upgraded from 4.4.3 to 4.4.7. so i think i respect upgrade path and i used engine-setup command like in the manual. But on the vdsm side i does not know there is upgrade path, i already tried to remove/readd one buggy host but without succes. so what do you think i can do? Lionel Caignec. ----- Mail original ----- De: "Ales Musil" <amusil@redhat.com> À: "Lionel Caignec" <caignec@cines.fr> Cc: "users" <users@ovirt.org> Envoyé: Vendredi 9 Juillet 2021 09:45:15 Objet: Re: [ovirt-users] Multiple gateway not working after "big update" Hi, from the vdsm version it seems that the upgrade was from 4.2 to 4.4.7. Direct upgrade like that is not supported. There were a lot of changes 4.4 networking among other changes which might result in what you are experiencing. Please take a look at upgrade path from 4.2 to 4.4 in https://www.ovirt.org/documentation/upgrade_guide/index.html Thanks, Ales -- Ales Musil Software Engineer - RHV Network Red Hat EMEA <https://www.redhat.com> amusil@redhat.com IM: amusil <https://red.ht/sig>