Hi Guys,
last night a have seen a strange behavior with a Sophos UTM 9.204020 Linux Guest VM. (This VM is based on SUSE SLES v11? i think)
So i have Setup this in my home lab and experienced the same problem.
----Setup-----
2 External VM Switches
Management OS is on VLAN 4093 with IP 192.168.20.1
The guest network adapter is in Trunk Mode, VLAN Tag (4093) is set in the guest OS with IP 192.168.20.100
Everything works until you kick off a reboot from the guest or hyper-v console, after the reboot you loose the connectivity on the network adapter with the vlan trunk.
If you shutdown the guest and start it everthing works again - this happens only on reboot!!
I have tried diffrent things (static mac, enable disable hardware features (vmq/offloading etc) on the vm network adapter but always the same error.
After some search on the net i have found this article: Link
This guy has the same problem with another linux vm (based on debian) his workaround was to trigger a powershell script with the eventlog after reboot of the vm, this works for me too but this must be bug?
Has anyone else experienced this problem?
André