On Wednesday 03 Nov 2010 18:03:25 Joshua Oreman wrote:
> The benefit is in compatibility with Intel PXE, which acts similarly.
> I'm not incredibly attached to the approach, I just wanted to point
> out that this patch might fix the problems with it if we consider
> supporting the same broken setups Intel PXE supports to be a desirable
> thing.
I would consider that to be desirable. My understanding is that the behaviour
change required to achieve this affects only ProxyDHCPREQUESTs (not regular
DHCP, or PXE options obtained in full via a ProxyDHCPOFFER), and can roughly
be described as:
1. When receiving DHCPOFFERs containing PXE options (option 60 set to
"PXEClient"), maintain a list of all such offers, rather than only the single
best offer.
2. After completing DHCPREQUEST/DHCPACK, process the list of PXE offers in
order of desirability. For each offer:
a) if it already contains a boot filename or a PXE boot menu, use it as a
source of options with no further processing,
b) otherwise, attempt a ProxyDHCPREQUEST to port 4011 of the offering
server. If this times out, move to the next offer in the list.
Does this seem correct to you?
Michael
