try {
Random r = new Random(42L);
// peer.getP2PConfiguration().setBehindFirewall(true);
Bindings b = new Bindings();
// b.addInterface("eth0");
b.addAddress(InetAddress.getByName(addr));
// b.addAddress(InetAddress.getByAddress(addr));
peer = new PeerBuilderDHT(new PeerBuilder(new Number160(r)).bindings(b).ports(serverPort).start()).start();
System.out.println("peer started.");
for (;;) {
Thread.sleep(5000);