bind given ipv6

ipv6.js

var http = require('http');

var options = {
  hostname: 'www.whatismyipv6.com',
  localAddress: process.argv[2],
  family:6
};

var req = http.request(options, function(res) {
  res.on('data', function (chunk) {
    console.log(chunk.toString());
  });
});

req.on('error', function(e) {
  console.log('ERROR: ' + e.message);
});

req.end();