* Michael Blinn <[email protected]> [2010-07-18 09:10]:

> Thank you - but no. "2nd DHCP address" refers to the 2nd time the one card
> does a DHCP request. As I understand it, the first is for TFTP, the 2nd is
> when we bring up the network interface.

The second one is done from "within" the initrd, when the actual Linux
system (kernel + stuff on the initrd) is running and asks for an IP
address. This means that sometimes the 1st (PXE) DHCP request works well and
then the 2nd one doesn't because 1) there's no driver for the network card
or 2) there are 2 network cards and the Linux system does the request from
the wrong one or 3) there's a DHCP relay involved and the request goes out
via DHCP client strangely so that the relay doesn't work, or ...

> I'm leaning toward this being a race condition issue, as I've found that
> gPXE only works about 1 out of every 4 times. Perhaps 'regular' PXE works 1
> out of every 4 boots as well, however I've never managed to get PXE to boot
> at all.

Whatever "gPXE" does differently, the 2nd request should still come from the
Linux system that has been started via TFTP at that point (AFAICS). If you
want to digg into it, you could try tweaking the stuff included on the
initrd, but I don't really know if it will lead you anywhere.

Good luck + let us know if you find the culprit.

Robert

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