I am running TrueNAS Core, version 13.0-U6.2 on an old Turion AMD ProLiant server. If have set up and run a Debian VM to host a weather logging program. This has run for many years with no issues. I also ran NextCloud in a separate jail as a plugin. I recently tried to update this NextCloud plugin and it was there that my problems started!
For some unexplained reason, I am left with a VM that has no network connection. No problem connecting to the TrueNAS on 192.168.1.85 and my router lists the Debian instance with the correct MAC for the NIC but does not issue an IP4 address. It does list the IP6 address.
The result of an ip a is :
My interface set up within TrueNAS is with a bridge as per recommendations on this site :
My /etc/network/interfaces setup is for DHCP :
Before I wipe my installation (and possibly migrate to SCALE) I would like to know if there is any way to recover the several years of weather data that are on the Debian VM. I cannot attach a USB as the machine does not support IOMMU. I cannot see any of the volumes outside of the VM, so the files appear to be stuck there.
Any help either on the networking problem or getting the files off the VM would be appreciated.