Re: [Qemu-devel] patch: allow defining MAC address etc

[Jim C. Brown]

On Sat, Aug 20, 2005 at 10:46:46PM -0400, jamal wrote:
> > Your script should be able to get all the information it needs from the MAC 
> > address. You can either hardcode addresses or do pattern matching.
> > The guest MAC address is arbitrary, so you can choose whatever numbering is 
> > convenient.  For example you could use the last digit of the address to 
> > encode your ID field. 
> 
> The only problem is that would tie the two things (MAC + ID) together.
> i.e it would not be possible to just pass the ids without specifying
> macs.
> 

As it should be. A macaddr identified each NIC in the virtual computer uniquely.
Both within the guest and across guests (if you are running multiple qemu VMs
with tuntap networking).

A discussion on IRC before lead to the idea that, if a script should handle
multiple guests, qemu should pass the macaddr in $2 to allow the script to
identify the guest NIC. That is the only thing needed to uniquely identify
a guest, there should be no need for a separate ID.

-- 
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.