code: private boolean isTypeValid(char type) {
  		return (type == MAPPED_ADDRESS || type == RESPONSE_ADDRESS
  				|| type == SOURCE_ADDRESS || type == CHANGED_ADDRESS
  				|| type == REFLECTED_FROM || type == XOR_MAPPED_ADDRESS
  				|| type == ALTERNATE_SERVER || type == XOR_PEER_ADDRESS
  				|| type == XOR_RELAYED_ADDRESS || type == DESTINATION_ADDRESS);
  	}
docs: Verifies that type is a valid address attribute type.
  
  @param type
  the type to test
  @return true if the type is a valid address attribute type and false
  otherwise