[Maas-devel] Support for ARM PXE booting, esp. in absence of control over DHCP

[Robert Collins]

On Tue, Aug 21, 2012 at 1:40 AM, Gavin Panella
<gavin.panella at canonical.com> wrote:

....

Two complications to be aware of:
A: If you're not in the same subnet (and you may not be even when you
control DHCP because worker scaling may be greater than subnet
broadcast scaling), then you can't get the MAC address from the
machines arp table unless proxy arp is being done by the router. The
GET request in TFTP is IP address based IIRC, so I'm no sure where you
will get the MAC from.

B: MAC addresses are not globally unique. Folk reuse and remix ranges
in rather horrific ways.

-Rob