Solved

Deny DNS ipV6 reply

Posted on 2014-10-07
2
91 Views
Last Modified: 2014-11-12
Hello,
We have a tool which queries DNS for ipV6 & since DNS doesn't reply on ipv6, it times out.

Is there a way on DNS to say deny queries on ipv6 immediately?

It's DC Server 2008R2 SP1.

Regards,
A
0
Comment
Question by:Ackles
2 Comments
 
LVL 16

Accepted Solution

by:
Joshua Grantom earned 500 total points
ID: 40365934
No, that is controlled on the client side (tool) It decides how many requests to send and will send the amount of requests even if it gets no response the first time.

Its like the ping in cmd, you can choose how many echo requests to send, it will send that many no matter what the response is. Below it will send 10 (default is 4)

ping google.com -n 10


I would check the tool settings to see if you can disable it from querying IPv6 all together.
0
 
LVL 57

Expert Comment

by:Cliff Galiher
ID: 40365953
Even if you could get such a thing working, it'd likely have unintended consequences. Such as a service assuming the denial means the request was bad and not waiting for the IPv4 response. Timing out is, in almost all cases, exactly the behavior you want when an IPv6 record doesn't exist. Don't forget that in 2008 and higher, IP is a true dual stack architecture, so a time-out on IPv6 won't delay IPv4 responses.
0

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
A procedure for exporting installed hotfix details of remote computers using powershell
This tutorial will walk an individual through the steps necessary to configure their installation of BackupExec 2012 to use network shared disk space. Verify that the path to the shared storage is valid and that data can be written to that location:…
This tutorial will walk an individual through the steps necessary to install and configure the Windows Server Backup Utility. Directly connect an external storage device such as a USB drive, or CD\DVD burner: If the device is a USB drive, ensure i…

831 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question