Hi,
We installed proxmox for our client, but lately we got this error message in the log file
warning : enp0s31f6: post-up cmd 'echo 1 > /proc/sys/net/ipv4/enp0s31f6/proxy_arp' failed : returned 2 (/bin/sh : 1: cannot create /proc/sys/net/ipv4/enp0s31f6/proxy_arp : directory nonexistant)...