// bind and store channel so we can close it when stopping
ChannelFuture channelFuture = connectionlessClientBootstrap.bind(new InetSocketAddress(0));
channelFuture.awaitUninterruptibly();
Channel channel = channelFuture.channel();
allChannels.add(channel);
answer = connectionlessClientBootstrap.connect(new InetSocketAddress(configuration.getHost(), configuration.getPort()));
if (LOG.isDebugEnabled()) {
LOG.debug("Created new UDP client bootstrap connecting to {}:{} with options: {}",
new Object[]{configuration.getHost(), configuration.getPort(), connectionlessClientBootstrap});
}