Re: [DNSOP] Review of draft-livingood-dns-redirect-00

[Jim Reid <[e-mail]>]

On 17 Jul 2009, at 10:12, Andreas Gustafsson wrote:

> But to give one concrete example, DNS-based blacklists and whitelists
> will be impacted as they rely on NXDOMAIN responses to indicate that
> an address or name is not listed.

To give another, Internet Explorer uses NXDOMAIN responses to do a  
google search of what was in the browser bar and display the results  
of that search IIUC. This is equally as evil IMO as doing DNS  
redirection and sending the user to some ISP-supplied landing page.  
There's no need to explore this rat-hole. so please don't. The point  
here is that DNS redirection breaks the default, expected behaviour of  
a very commonly used application because the browser no longer sees  
NXDOMAIN.