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Trying to enable DHCP Server Binding for IPv6 Address Pool Failing with Network Change Error

Posted on 2011-03-03
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Last Modified: 2012-05-11
I am trying to bind the DHCP Server to the static IPv6 IP Address setup for the NIC on the server so IPv6 addresses get issued to clients.  The server has 4 NICs group into a single Virtual Adapter and only that adapter is configured with an IPv4 and IPv6 address.  When I try to select the Static IP in the DHCP Server Bindings I get the following error:

"The network has changed.  Retry this operation after checking for the network changes.  Network changes may be caused by interfaces that are no longer valid, or by IP addresses that are new or no longer valid."

I have no idea what it means by network has changed or what I should be checking.
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Question by:mswildma
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by:Netman66
ID: 35047844
I assume you mean the NICs are Teamed somehow - is that correct?  Where are these teamed - is this a Proliant using Teaming software or something in a virtual environment?

I would have to think that you need IPv6 enabled and bound to all the underlying physical NICs before you could enable it on the virtual one.

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Author Comment

by:mswildma
ID: 35056182
It is a Dell PowerEdge T310 with 2 Dual Port Broadcom 5709 NICs.  The teaming is done via the Broadcom Control Suite Software.  It creates a BASP Virtual Adapter and only that adapter can have protocols and binding selected whereas the actual adapters, all four of them, have the Broadcom driver selected.  That setup is the default and automatically created when the Broadcom software creates the team.
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by:Netman66
ID: 35056416
If you un-team them (is that even a word - lol), are the individual NICs bound with IPv6?

By default, when the OS is installed and before you install the teaming software, IPv6 *should* be checked on the NICs, but I just wanted to make sure.

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Author Comment

by:mswildma
ID: 35056495
I had made sure all options were selected before I teamed the adapters, plus I had already configured the static IPs on both the IPv4 & IPv6 for the first NIC so those settings would carry over to the Virtual Adapter since I selected the first NIC as the primary to use that MAC address.
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Netman66 earned 500 total points
ID: 35056970
Perfect.  That's all there should be to do.

When you select the virtual nic for the listener in DHCP, the error above is what you are seeing?

Have you ensured the virtual nic is at the top of the binding order?

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Assisted Solution

by:mswildma
mswildma earned 0 total points
ID: 35070379
It was selected at the top of the list in the binding order.

I came up with another fix....It's a good one.

I figured since I was just setting this up there was a good chance I screwed the pooch on some setting and if I was having this confusing issue now who knows what would happen when I put the machine into production.

So I formatted and reinstalled Windows Server and now it is working the first time.

I suppose at this point fixed is better than knowing why it happened in the first place.

Thanks for all the help.
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Expert Comment

by:Netman66
ID: 35070414
Interesting.

Glad it's working, too bad we don't know exactly why...

My pleasure to help.
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Author Closing Comment

by:mswildma
ID: 35120620
Expert asked good questions and was easy to follow in trying to resolve the issue.
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