@blueh2o Ooops, sorry - I read your message the wrong way around. You're right, that sounds really weird in your case....

@probain Yes, that's expected as there were only changes in the installer and XenClean/XenBootFix, the drivers and guest agent binaries included in 9.1.145 and 9.1.146 are the exact same. As a result, the version information in the guest agent (which does the reporting) was not updated.

Whats the question?

@User-cxs si ici :[image: 1774010356739-c9d11a94-06d8-4a3c-b191-f95b2e2ef6f7-image.jpeg] tu DISABLE le serveur. tu nous confirme que c'est "comme" le probleme que tu constates ? un XOA tout vide en page d'accueil ? tu re ENABLE, et ça reviens ok ? tu n'as pas de probleme réseau / micro coupures / host distant au XOA (ipsec/openvpn?) ? la déco/reco que tu as me fait penser a un simple probleme réseau (si ça reviens tout seul et aucun autre impact...)

@florent I rebuilt my XCP hosting environment (everything is faster and bigger stuffed into one rack).... and this issue is now worse. The main changes to this new setup are 2x40Gb networking, faster NFS NVMe NAS, faster pool servers, more memory, much faster CR destination machine with ZFS. Running XCP 8.3 (March 2026 updates) and XO (master a2e33). Replication is leaving many attached to control domain every day with NBD connection set to 2. Changing it to 1 seems to resolve the issue (no more stuck to control domain).

@anthoineb thanks very much! Definitely has us sharpening our cli skills in the meantime….

An update for ipmitool has just been released, incorporating a fix for the issue you were experiencing: https://xcp-ng.org/blog/2026/03/19/march-2026-security-updates-for-xcp-ng-8-3-lts/

@yann Item Opened on Gitlab.

@olivierlambert Can you provide insights? Is nested virtualization as in running Hyper-V inside a XCP-ng VM expected to work?

@TeddyAstie That's more like it. I'm not finding the com2tcp though. I at least have something to search for. Once configured, is this persistent or do I need to create some sort of start up script that runs/loads a config on machine boot? Thanks!!

Found issue in my script all seems to be working now for me just no vmware vm to test import on

@kratos said: This may not be best practice. in a two hosts pool, if your replicated VMs live on the Master, and it's gone, you won't be able to start the replicated VMs you will first need to transition slave to master indeed CR is better to another pool

But thank you for your time all the same.

@rzr Hi. Thank you very much. I will be setting up a new server within the next 2 weeks and will definitely test it. Then I will give you feedback! Thank you again for picking it up!

@Pilow We tried that as well, same problem Also tried with a VM on the same newtork, just another VLAN, and we're seeing the same thing. At first we figured it was because one of the xcp-ng's was on a remote site which is connected through an IPSEC VPN, but that wasn't the case.

@Dezerd you just have to start-copy the Replica VM it permits the original job to keep replicating on the VM. there is no failover/failback mecanism AFAIK if you work on replica started VM, you will have to put up in place a replica going to original hosts

Thank you all for your answers—now it's clear.