Just curious, what is your kernel
      version?  I had a similar issue trying to set up wireguard on an
      old kernel, aarch64 machine.
      
      Mario Marietto via Dng wrote:
    
    
      
      
      
        root@devuan:~#
              sudo modprobe ip_tables
            
        
        
        root@devuan:~# sudo
            echo 'ip_tables' >> /etc/modules
          
        
        
        root@devuan:~# iptables
            -t nat -A POSTROUTING -o mlan0 -j MASQUERADE
        
          
        
        iptables v1.8.7 (legacy):
          can't initialize iptables table `nat': Table does not exist
          (do you need to insmod?)
          
          Perhaps iptables or your kernel needs to be upgraded.