CT Debian 12 local connexion issue


Renowned Member
Jul 7, 2009

a created a new ct debian 12 from the template "debian-12-standard_12.0.1_amd64".

When i start the CT no issue, but after approximately 1 hour, i can't connect from this server to the other CT debian 10. the CT is siolate insght the proxmox host, but it's work from internet. If i restart the CT, it's work fine for 1 hour

I tested with 2 CT debian 12 and i have the same issue. no problem with my old CT debian 10

I don't show error in the syslog

My configuration

Proxmox 7.4-16
CT debian 12 options
Capture d'écran 2023-08-13 114613.png

Edit: I tested with a new CT debian 11 and i don't have the issue
Edit 2: i can't access from de host proxmox (ping,ssh)
Last edited:
Hi, i foud the issue.

it was the gateway of my LXC server.
My old LXC server (debian 10) are the ip proxmox server for the gateway and it's work.

But for the debian 12, it put the ip proxmox server and i changed the lats digit by 254 and it's work

I use this tuto


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