anchor.diff:            extraFlags+=" --network-bridge=$HOST_BRIDGE"
           fi
           if [ -n "$HOST_PORT" ]; then
  -          extraFlags+=" --port=$HOST_PORT"
  +	  OIFS=$IFS
  +	  IFS=","
  +          for i in $HOST_PORT
  +	  do
  +              extraFlags+=" --port=$i"
  +	  done
  +	  IFS=$OIFS
           fi
         fi
   
  
positive.code:     };
  
      hostPort = mkOption {
        type = types.nullOr types.string;
        default = null;
        example = "8080";
        description = ''
          Allow port forwarding from the host to the container. 
        '';
      };
  
  
negative.code:               ${optionalString (cfg.hostBridge != null) ''
                  HOST_BRIDGE=${cfg.hostBridge}
                ''}
                ${optionalString (length cfg.hostPort > 0) ''
                  HOST_PORT=${concatStringsSep "," cfg.hostPort}
                ''}
                ${optionalString (cfg.hostAddress != null) ''
                  HOST_ADDRESS=${cfg.hostAddress}
  