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[moonv6] RE: Vista DNS behavior - Re: [nav6tf] IPv6 news - weekly summary

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From: Bound, Jim (Jim.Bound@hp.com)
Date: 09/14/06


Yeah very nice and helpful and reinforces Chris's mail hands on. (thanks Chris)
thx
/jim

        From: owner-nav6tf@ipv6forum.com
[mailto:owner-nav6tf@ipv6forum.com] On Behalf Of geof (New Internet/IPv6, SCV Network) 

	Sent: Thursday, September 14, 2006 5:58 PM
	To: Dave Green
	Cc: Bill Cerveny; Joya Subudhi; nav6tf@ipv6forum.com;
moonv6@iol.unh.edu
	Subject: Re: Vista DNS behavior - Re: [nav6tf] IPv6 news -
weekly summary                  

        thanks Dave. very helpful.         

        geof                  

        On 9/14/06, Dave Green <green@commandinformation.com> wrote:

                Bill, et all:                 

                We've been aware of this behavior on XP, but had not checked for it in

                Vista. Since we run a fully dual-stacked environment this behavior

                wasn't causing us a problem. However, if it was still present it could

                cause long lags on IPv4-only environments so I tested this today on the

                Vista Pre-RC1 Build 5536 we are pilot testing for production. To test

                this, I used an IPv6-capable packet sniffer to capture and decode all

                DNS queries with Vista on our main dual stacked environment, and on the

                v4-only and IPv6-only environments we run for application testing. This

                is what I found:                 

                -On a native IPv6-dual-stacked connection Vista Generated 2 DNS requests

                for each record and I was able to reach our IPv6-only content sites.                 

                -In our IPv4-only test environment, I only saw requests for A records

                and requests to our IPv6 only content sites failed.                 

                -In our IPv6-only environment, I only saw requests for AAAA records and

                our IPv6 content sites worked fine.                 

                I believe that this behavior is exactly what we wanted Vista to do.                                   

		David Green | VP of R&D | Command Information
		13655 Dulles Technology Drive, Suite 100 |  Herndon, VA
20171
		O: 703.561.5937 | M: 703.899.9663 |

green@commandinformation.com                                                                     
		-----Original Message-----
		From: owner-nav6tf@ipv6forum.com
[mailto:owner-nav6tf@ipv6forum.com] On
		Behalf Of Bill Cerveny
		Sent: Monday, September 11, 2006 6:53 PM
		To: Joya Subudhi; nav6tf@ipv6forum.com ;
moonv6@iol.unh.edu
		Subject: Vista DNS behavior - Re: [nav6tf] IPv6 news -
weekly summary                 

                Does anyone have any experience with Vista beta?                 

                The two articles below about Vista and DNS melting the Internet suggest

                that Vista will always make two DNS requests; one for the A record and

                the other for the AAAA record. While I might expect this to occur if

                Vista thinks it is connected to an operational IPv6 network, will Vista

                still do this if it doesn't have a globally routable IPv6 address or any

                other indication that it is connected to an IPv6-enabled network?                 

                Bill Cerveny                 

                On Mon, 11 Sep 2006 10:38:21 -0400, "Joya Subudhi" < joya@subudhi.com> 

		said:


		> IPv6 news - weekly summary

		> Main News:

		> Plan for cyberspace available in near future

		> http://www.ipv6tf.org/news/newsroom.php?id=2237

		>

		>

		> Other News:

		> IPv6: The future is now

		> http://www.ipv6tf.org/news/newsroom.php?id=2236 

		>

		>

		> Security:

		>

		>

		> Corporate and Products:

		> Vista's role in Imminent Net Death overstated

		> http://www.ipv6tf.org/news/newsroom.php?id=2240 

		>

		> Command Information Appoints Greg Sloan to Lead

Commercial Sector


		> Business Development

		> http://www.ipv6tf.org/news/newsroom.php?id=2239 

		>

		> Will Vista stall Net traffic?

		> http://www.ipv6tf.org/news/newsroom.php?id=2238

		>

		> Using the Network Diagnostic Tester

		> http://www.ipv6tf.org/news/newsroom.php?id=2235

		>

		>

		
		




	-- 
	geof lambert  p.916.225.6769
	
	New Internet Information
	GOOGLE: geof lambert
	geof.lambert@gmail.com
	
	Transition to the New Internet
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	www.NAv6TF.org
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	www.CAv6TF.org
	
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	Applying Internet Technology 
	for the Common Good
	
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