From: Brian Candler <B.Candler@...>
Date: 2008-09-13T06:05:48+09:00
Subject: Re: Socket.getaddrinfo and IPSocket.getaddress super slow?

> Anyone know why Socket.getaddrinfo and IPSocket.getaddress take up to 3
> seconds to return when the host doesn't have a record in DNS?

They seem to do reverse DNS lookups on occasions where you might not want
them to (e.g. finding the IP address to which a socket is bound). Try adding
to the top of your program:

  require 'socket'
  Socket.do_not_reverse_lookup=true