code: protected void validate(String operationType) throws Exception
  	{
  		super.validate(operationType);
  
  		MPSIPAddress ip_address_validator = new MPSIPAddress();
  		ip_address_validator.setConstraintIsReq(MPSConstants.MODIFY_CONSTRAINT, true);
  		ip_address_validator.validate(operationType, ip_address, "\"ip_address\"");
  		
  		MPSIPAddress netmask_validator = new MPSIPAddress();
  		netmask_validator.setConstraintIsReq(MPSConstants.MODIFY_CONSTRAINT, true);
  		netmask_validator.validate(operationType, netmask, "\"netmask\"");
  		
  		MPSIPAddress gateway_validator = new MPSIPAddress();
  		gateway_validator.setConstraintIsReq(MPSConstants.MODIFY_CONSTRAINT, true);
  		gateway_validator.validate(operationType, gateway, "\"gateway\"");
  		
  	}
docs: <pre>
  Performs generic data validation for the operation to be performed
  </pre>