Hello, I have deployed oVirt 4.5 on CentOS Stream 8 with self-hosted engine, in IPv6-only mode. I am trying to use noVNC console, from Firefox on MacOS. I have added engine's CA to the list of trusted CAs. I have noticed the webproxy only listens on IPv4 by default, I have tried to add the following configuration file and it made it listed on both IPv4 and IPv6: [root@mng41 ~]# cat /etc/ovirt-engine/ovirt-websocket-proxy.conf.d/20-ipv6.conf SOURCE_IS_IPV6=True Is this correct approach or there is a better way? I guess this should be part of the setup process... Anyway, it does not solve my issue. When I try to use noVNC console, I get the following error in the Firefox javascript console: Loading failed for the <script> with source “ https://mng41.gremwell.com/ovirt-engine/services/files/novnc/vendor/promi... ”. I also get the following message: Firefox can’t establish a connection to the server at wss:// mng41.gremwell.com:6100/ey... I have checked that the port is open and I see some traffic flowing between the browser and that port. In /var/log/ovirt-engine/engine.log I see: 2022-11-11 14:32:57,652+01 INFO [org.ovirt.engine.core.bll.SetVmTicketCommand] (default task-11) [2d6aa0eb] Running command: SetVmTicketCommand internal: false. Entities affected : ID: 7fb95436-da52-421a-a733-503181429929 Type: VMAction group CONNECT_TO_VM with role type USER 2022-11-11 14:32:57,657+01 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SetVmTicketVDSCommand] (default task-11) [2d6aa0eb] START, SetVmTicketVDSCommand(HostName = elon41.gremwell.com, SetVmTicketVDSCommandParameters:{hostId='f63b9132-fb54-4c24-b5b3-240c0a1896f9', vmId='7fb95436-da52-421a-a733-503181429929', protocol='VNC', ticket='47kRPdus', validTime='120', userName='admin', userId='af04127c-60d7-11ed-8ad9-00163e63cf1d', disconnectAction='LOCK_SCREEN', consoleDisconnectActionDelay='0'}), log id: 27745778 2022-11-11 14:32:57,688+01 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.SetVmTicketVDSCommand] (default task-11) [2d6aa0eb] FINISH, SetVmTicketVDSCommand, return: , log id: 27745778 2022-11-11 14:32:57,716+01 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-11) [2d6aa0eb] EVENT_ID: VM_SET_TICKET(164), User admin@internal-authz initiated console session for VM test 2022-11-11 14:32:57,947+01 INFO [org.ovirt.engine.core.utils.servlet.ServletUtils] (default task-11) [] Can't read file '/usr/share/ovirt-engine/files/novnc/vendor/promise.js' for request '/ovirt-engine/services/files/novnc/vendor/promise.js' -- 404 Any ideas how to have this fixed? Best regards, Alex