Hi, 

I also did the same upgrade recently. 

On Mon, 7 Aug 2023, 00:33 Jamie MacIsaac via BitFolk Users, <users@mailman.bitfolk.com> wrote:
Hi,

I upgraded my Debian system from Bullseye to Bookworm earlier today. It mostly went pretty smoothly, but I have two questions:

1. I remembered to change the interface name from eth0 to enX0 but couldn't connect to any regular network services (ssh, httpd) after the system was rebooted. I used the Xen shell to change the interface name back to eth0, and could connect again after a reboot. Are some systems happy to stay as eth0? This is quite an old system and has been upgraded in place over several years (started as a Debian 5.x (Lenny) system in 2009.

Did you have any firewall rules specifically for eth0? That was what caused me to lose ssh access after the upgrade. 

Kevin