[tor-talk] How dangerous are DNS leak?

[antispam06 at sent.at]

On Tue, Sep 18, 2012, at 15:13, adrelanos wrote:
> Jerzy Łogiewa:
> > How dangerous are the DNS leak for some user?
> 
> Very dangerous!
> 
> http://www.howdoihidemyip.com/dnsleak.htm
> "The DNS leak provides your ISP name and location to the website that
> you are visiting, thus undermining your ability to stay anonymous on the
> internet. For example, if you visit a website using a proxy from Sweden,
> it will first appear to the website that you are an internet user in
> Sweden. However, due to a DNS Leak, the website may be able to determine
> that your ISP is actually AOL, which would mean that you are located in
> the United States."
> 
> Check it yourself:
> http://check2ip.com/

How can one push all DNS requests through Tor and save the ISP the
effort?