ifupdown2 installation without proxmox update

[skraw]

Hello all,

I recently ran into the problem that an updated proxmox node cannot join a cluster with older version. So I tried to install the node with the same old proxmox version - which works. I can join the cluster. Only I had to find out that installing ifupdown2 the usual way updates proxmox right away. That does not work in this setup. Still I want to use ifupdown2. Any hints on how I can achieve that?
Thanks for reading.
--
Regards

 

[Richard]

Hello all,

I recently ran into the problem that an updated proxmox node cannot join a cluster with older version. So I tried to install the node with the same old proxmox version - which works. I can join the cluster. Only I had to find out that installing ifupdown2 the usual way updates proxmox right away. That does not work in this setup. Still I want to use ifupdown2. Any hints on how I can achieve that?
Thanks for reading.
--
Regards

Run simply

apt install ifupdown2

at your "old" (probably PVE6) version.