what is the absolute best way to disable V6 on a windows 2008 r2

NAMEWITHELD12
NAMEWITHELD12 used Ask the Experts™
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why would you need to ?
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Aaron TomoskyDirector of Solutions Consulting

Commented:
Uncheck it on the properties for the network adapter.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Above  is how to disable.

>>> why would you need to ? <--- No need to. I have never disabled it - workstation or server - and have not encountered any issues.  

So put another way, you need a good reason of your own to disable, and if you have none, don't bother.

.... Thinkpads_User
Commented:
To disable IPv6 on all network interfaces on a computer you must create a DWORD 32-bit registry value named “DisabledComponents” in the following registry key branch:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tcpip6\Parameters\

disable-IPv6-DisabledComponents

The value data for DisabledComponents must be set to 000000FF.
Martin KühnSystem Administrator

Commented:
unchecking on the network adapter only removes the binding. djashley way is the right one
Top Expert 2014

Commented:
This is the best way... as detailed by Microsoft...

http://support.microsoft.com/kb/929852

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