DNS not working in forked processes

server.js

var cp = require('child_process'), 
dns = require('dns');

/** server.js */
// *does* work
dns.resolve4('www.google.com', function(err, addresses) {
	console.log("Resolved from service.js");
	console.log(addresses);
});


function createChild() {
	var child = cp.fork(__dirname + '/worker.js', null, {setsid: true});

	child.send({
		"host" : 'www.google.com'
	});
	
	setTimeout(createChild, 5000);
}

createChild();

worker.js

var http = require('http'), url = require('url'), dns = require('dns');

// *not* working
dns.resolve4('www.google.com', function(err, addresses) {
	console.log("Resolved from worker.js")
	console.log(addresses);
});


process.on('message', function(msg) {
	console.log("worker.js: message received");
	// *not* working
	dns.resolve4(msg.host, function(err, addresses) {
		console.log("worker.js[message] DNS resolved");
		console.log(addresses);
	});
	process.exit();
});