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 HALP! Questions on Windows and Windows Server
 Windows Server 2008
 IP4 / IP6		  New Topic  Reply to Topic
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protech
Old Timer

United Kingdom
303 Posts
Status: offline
Posted - 06/27/2012 :  09:11:56 AM  Show Profile  Reply with Quote
Hi,

When doing a ping x.x.x.x on a 2008 R2 Server, sometimes the response comes back as IP4 and sometimes as IP6. What defines the response you get?

Thanks

JeffWouters
Here To Stay

Netherlands
147 Posts
Status: offline
Posted - 06/27/2012 :  10:15:27 AM  Show Profile  Visit JeffWouters's Homepage  Click to see JeffWouters's MSN Messenger address  Look at the Skype address for JeffWouters  Reply with Quote
This is mostly caused by DNS cache. First, delete the ipv6 entries on your DNS server. After that, clean up the cache with the following commands:
ipconfig /flushdns
nbtstat -R

Secondly, when there are multiple addresses on a network adapter the IPv6 addresses are preferred.

Note: To be sure to get the ipv4 response, use ping server1 -4
Greetsz,
Jeff.
Edited by - JeffWouters on 06/27/2012 10:16:31 AM
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protech
Old Timer

United Kingdom
303 Posts
Status: offline
Posted - 06/28/2012 :  05:57:36 AM  Show Profile  Reply with Quote
Cheers Jeff
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