[ipxe-devel] Infiniband GUID

Michael Brown mcb30 at ipxe.org
Tue Sep 5 23:57:58 UTC 2017

On 06/09/17 00:38, Allen, Benjamin S. wrote:
> I'm attempting to emulate what we're doing for ethernet clients in ISC-DHCP by passing the iPXE cfg path, eg 'filename "${mac}";', where iPXE helpfully evaluates and fills in ${mac}.

The (local) eIPoIB MAC address is systematically derived from the GUID 
by just omitting the middle two bytes:


If you know the GUID, then you can trivially calculate the IPoIB MAC 
that will be used by iPXE (and exposed as ${netX/mac}).  Does this give 
you the functionality that you need?


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