Debian 12 TDN template is not working with SSH.

Symptoms 

A Debian 12 TDN template-based VM is not connecting via SSH.

Cause

The /etc/apt/sources.list file is misconfigured in the template. This has been identified as a product issue with the ID SVM-4009.

Resolution

This product issue will be fixed in an upcoming update. Until it is released, a workaround is to mount the template and replace the following lines in /etc/apt/sources.list:

1. Mount the template:

   Create a temporary directory for mounting:

   mkdir test

2. Mount the template:

   guestmount -a linux-debian-12-x86_64-freepbx17-gen2-v1 -i --verbose test

Wait until the mount is complete.

3. Open the file for editing:

nano /home/solusvm/kvm/template/test/etc/apt/sources.list

4. Insert the following lines:

deb http://deb.debian.org/debian bookworm main non-free-firmware
deb-src http://deb.debian.org/debian bookworm main non-free-firmware
deb http://deb.debian.org/debian-security/ bookworm-security main non-free-firmware
deb-src http://deb.debian.org/debian-security/ bookworm-security main non-free-firmware
deb http://deb.debian.org/debian bookworm-updates main non-free-firmware
deb-src http://deb.debian.org/debian bookworm-updates main non-free-firmware

5. Unmount the filesystem:

guestunmount test

6. Remove the test folder:

rm -rf test