Simply put it seems mountain lion will use either en0 or en1 or wi-fi if no en1 
as the MAC address returned by the foundry's licensing software. 

It seems a bit random as to which one can be returned. 

This is a well discussed issue recently on the list. No solution has been iron 
proof so far. 

I'm assuming that its an OS issue rather than the licensing software and pretty 
sure I've confirmed that in the shell. 

Anyway for a rock solid system on Lion this is now an issue with Mountain Lion. 

I've ordered the network list but nothing works reliably. 

Re. bobos post I had read a number of similar posts hence why spoofing en1 and 
rebooting has so far worked at least temporarily. 

Lastly I haven't tested disabling en1 yet. 

Howard

On 27 Dec 2012, at 22:10, ArnoB <[email protected]> wrote:

> Hey Howard,
> 
> What exactly is going wrong? What is switching?
> 
> Nuke doesn't really look at the NICs does it?
> It talks to the license server which gets its MAC
> from the first NIC in the list on OSX.
> 
> I noticed sometimes the server goes down when
> that NIC doesn't have an IP anymore (either the plug
> is pulled or the wireless is out of reach).
> You can solve this by setting the IP manually in the
> sysPrefs/network.
> 
> Does that solve it for you?
> 
> greets
> Arno
> 
> 
> 
> 
> 
> On 27 dec 2012, at 17:23, Howard Jones wrote:
> 
>> Hi
>> 
>> Has anyone found a good solution for this?
>> 
>> I'm finding it's switching between en0 and en1 on a workstation.
>> 
>> I've tried spoofing the address by 
>> sudo ifconfig en1 lladdr <mac address>
>> 
>> but Nukex doesn't buy it, but on a restart it will switch back to en0, for a 
>> time at least.
>> 
>> On a notebook I guess en1 doesn't exist which is why it switched to Wi-Fi.
>> 
>> Cheers 
>> Howard
>> _______________________________________________
>> Nuke-users mailing list
>> [email protected], http://forums.thefoundry.co.uk/
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> 
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