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Add Solution

How to generate new MAC address

Source: microsoft.public.virtualpc
Sent: 05/10/2006
From: VBScab
Message:

Further to my post about re-joining a domain and having read further here, I
thought having VPC regenerate the MAC address for the VPCs was a good idea.
The help tells you:
===quote===
Edit the .vmc file to remove the MAC address. Find the following line:

<ethernet_card_address type="bytes">0003FFxxxxxx</ethernet_card_address>

Remove the number so the line appears as follows:

<ethernet_card_address type="bytes"></ethernet_card_address>

After you remove the number, Virtual PC will create a new MAC address the
next time you start the virtual machine.
==unquote==

The problem is the VPC won't even start with the VMC like that. Absolutely
nothing happens: no error message, no half-way start, nothing. Even worse, if
I restore the VMC to the way it was, VPC tells me that the configuration file
for that image is invalid! No amounting of editing will bring it back to a
working condition. Even restoring the .BAK from the edit session fails to
satisfy it.

So, what is the correct way to have VPC regenerate a MAC address for a VPC?
I don't want to manually edit the number in case I clash somewhere. Unlikely,
I know, but the way this project's going so far....

Host OS: Win2K SP4
Guest OS: Win 2003 Server SP1

Post Reply | This is Spam! | Mark as Spam

Related Messages

RE: How to generate new MAC address

Sent: 05/10/2006
From: VBScab
Message:

After creating a brand new machine, it would seem that these start out with
the whole line removed, not just the number between the element delimiters.
Anyway, I'm in no mood to mess with an existing one to see if I'm right, but
someone in a similar position might like to try it.

"VBScab" wrote:

Show quoted text

> Further to my post about re-joining a domain and having read further here, I
> thought having VPC regenerate the MAC address for the VPCs was a good idea.
> The help tells you:
> ===quote===
> Edit the .vmc file to remove the MAC address. Find the following line:
>
> <ethernet_card_address type="bytes">0003FFxxxxxx</ethernet_card_address>
>
> Remove the number so the line appears as follows:
>
> <ethernet_card_address type="bytes"></ethernet_card_address>
>
> After you remove the number, Virtual PC will create a new MAC address the
> next time you start the virtual machine.
> ==unquote==
>
> The problem is the VPC won't even start with the VMC like that. Absolutely
> nothing happens: no error message, no half-way start, nothing. Even worse, if
> I restore the VMC to the way it was, VPC tells me that the configuration file
> for that image is invalid! No amounting of editing will bring it back to a
> working condition. Even restoring the .BAK from the edit session fails to
> satisfy it.
>
> So, what is the correct way to have VPC regenerate a MAC address for a VPC?
> I don't want to manually edit the number in case I clash somewhere. Unlikely,
> I know, but the way this project's going so far....
>
> Host OS: Win2K SP4
> Guest OS: Win 2003 Server SP1
>

RE: How to generate new MAC address

Sent: 06/24/2006
From: roryw
Message:

I don't have the ethernet_card_address type section in my .vmc file. Where
does it go?

I'm getting an error when I start; "The network adapter with address
"00:00:00:00:00:00" of virtual machine..."

Thanks!

Host: WinXP Pro
Guest: WinXP Pro

"VBScab" wrote:

Show quoted text

Re: How to generate new MAC address

Sent: 06/24/2006
From: Steve Jain <(email address - cut out)>
Message:

On Sat, 24 Jun 2006 07:11:02 -0700, roryw
<(email address - cut out)> wrote:

This should probably help:

Virtual PC SP1 Networking problems (address "00:00:00:00:00:00" failed
to initialize)
http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/17/354971.aspx

--
Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/
I do not work for Microsoft.

Show quoted text

>I don't have the ethernet_card_address type section in my .vmc file. Where
>does it go?
>
>I'm getting an error when I start; "The network adapter with address
>"00:00:00:00:00:00" of virtual machine..."
>
>Thanks!
>

RE: How to generate new MAC address

Sent: 08/12/2006
From: Daggers
Message:

Hi,

Having tried the various solutions listed I finally got a new MAC address
created.
What I did....

My vmc file didn't have the line:
<ethernet_card_address type="bytes">0003FFxxxxxx</ethernet_card_address>

So I added it in and changed the number to a made up MAC address

Job Done!!!

"VBScab" wrote:

Show quoted text

> After creating a brand new machine, it would seem that these start out with
> the whole line removed, not just the number between the element delimiters.
> Anyway, I'm in no mood to mess with an existing one to see if I'm right, but
> someone in a similar position might like to try it.
>
> "VBScab" wrote:
>
> > Further to my post about re-joining a domain and having read further here, I
> > thought having VPC regenerate the MAC address for the VPCs was a good idea.
> > The help tells you:
> > ===quote===
> > Edit the .vmc file to remove the MAC address. Find the following line:
> >
> > <ethernet_card_address type="bytes">0003FFxxxxxx</ethernet_card_address>
> >
> > Remove the number so the line appears as follows:
> >
> > <ethernet_card_address type="bytes"></ethernet_card_address>
> >
> > After you remove the number, Virtual PC will create a new MAC address the
> > next time you start the virtual machine.
> > ==unquote==
> >
> > The problem is the VPC won't even start with the VMC like that. Absolutely
> > nothing happens: no error message, no half-way start, nothing. Even worse, if
> > I restore the VMC to the way it was, VPC tells me that the configuration file
> > for that image is invalid! No amounting of editing will bring it back to a
> > working condition. Even restoring the .BAK from the edit session fails to
> > satisfy it.
> >
> > So, what is the correct way to have VPC regenerate a MAC address for a VPC?
> > I don't want to manually edit the number in case I clash somewhere. Unlikely,
> > I know, but the way this project's going so far....
> >
> > Host OS: Win2K SP4
> > Guest OS: Win 2003 Server SP1
> >

Post Reply | This is Spam! | Mark as Spam

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