Hi all,
I have a PVE box in an environment with an MTU of 1400. It works absolutely fine. Any VMs created with an MTU of 1400 work absolutely fine. Debian 11 and 12 LXCs configured to use the bridge MTU also work fine.
The problem comes with the Debian 13 LXC (debian-13-standard_13.1-2_amd64.tar.zst) which, when configured to use the bridge MTU (or even explicitly setting the MTU to 1400), comes up with an MTU of 1500.
Am I missing something - any help would be appreciated.
N.
I have a PVE box in an environment with an MTU of 1400. It works absolutely fine. Any VMs created with an MTU of 1400 work absolutely fine. Debian 11 and 12 LXCs configured to use the bridge MTU also work fine.
The problem comes with the Debian 13 LXC (debian-13-standard_13.1-2_amd64.tar.zst) which, when configured to use the bridge MTU (or even explicitly setting the MTU to 1400), comes up with an MTU of 1500.
Am I missing something - any help would be appreciated.
N.