Re: DS and Opt-in - a proposal

[Stefan Arentz <stefan.arentz@soze.com>]

[ as this thread has drifted from protocol to ops, could it please be
  moved to dnsop@cafax.se?  thanks.  -- randy ]

On Mon, Dec 31, 2001 at 06:02:11PM +0100, bert hubert wrote:
> On Mon, Dec 31, 2001 at 10:23:05AM -0500, Loomis, Rip wrote:
> 
> > Both Netscape and IE include some DNS-related internal
> > capabilities--but I believe (as do others) that it's 
> > just a cache for data received through the normal system
> > gethostbyname() [or equivalent function].  In other words,
> 
> Piet Barber informed me that IE will query *all* configured resolvers
> simultaneously and use the first answer it receives. I hope this is not the
> default Windows behaviour!


Windows 2000 with MSIE 5.5 does not do this in it's default configuration. It
queries the first nameserver configured. The second nameserver is only queried
when the first one does not give back any response.

I just tested this with a tcpdump on two resolving nameservers.

MSIE does indeed have a cache and unfortunately it does not adhere to the
TTLs on DNS records. Tested with a A record with TTL=60.

  Stefan



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