Iptables v1.8.4 (nf_tables): Could not fetch rule set generation id: Invalid argument
If you try to enable ufw firewall, get this error: Iptables v1.8.4 (nf_tables): Could not fetch rule set generation id: Invalid argument CT (Ubuntu Ubuntu 22.04.2 LTS) on proxmox 7 Fix: apt install iptables update-alternatives –set iptables /usr/sbin/iptables-legacy update-alternatives –set…