docs: public final void setHopCount(int hopCount)
  	{
  		if (hopCount < 0 || hopCount > 255)
  			throw new KNXIllegalArgumentException("hop count out of range");
  		try {
  			((MulticastSocket) socket).setTimeToLive(hopCount);
  		}
  		catch (final IOException e) {
  			logger.error("failed to set hop count", e);
  		}
  	}