wget: unable to resolve host address

Here is a couple of errors that might occur in Ubuntu or Node.js running on ubuntu:

Command:

wget http://www.google.ro
# response
wget: unable to resolve host address

Or in node.js:

 { [Error: getaddrinfo ENOTFOUND] code: ‘ENOTFOUND’, errno: ‘ENOTFOUND’, syscall: ‘getaddrinfo’ }

I found the solution at:

http://askubuntu.com/questions/425484/unable-to-use-wget-command