anchor.diff:      allowedTCPPorts = [ 22 53 1100 1101 1102 1103 1104 8126 ];
       allowedUDPPorts = [ 53 ];
       extraCommands = ''
  -        iptables -t nat -A POSTROUTING -s 10.0.1.0/24 -o wlp8s0 -j MASQUERADE
  +        iptables -t nat -A POSTROUTING -s 10.0.2.0/24 -o wlp8s0 -j MASQUERADE
       '';
       extraStopCommands = ''
  -      iptables -t nat -D POSTROUTING -s 10.0.1.0/24 -o wlp8s0 -j MASQUERADE
  +      iptables -t nat -D POSTROUTING -s 10.0.2.0/24 -o wlp8s0 -j MASQUERADE
       '';
     };
   
  
positive.code:   };
  
    networking.interfaces.eno1 = {
      ipAddress = "10.0.1.1";
      prefixLength = 24;
    };
  
  
negative.code: {
    networking.nat = {
      enable = true;
      internalIPs = [ "10.0.2.0/24" ];
      internalInterfaces = [ "eno1" ];
      externalInterface = "wlp8s0";
      forwardPorts = [
  