Can't PXE Boot WDS/SCCM from iPXE?

[CreateGnome]

For this example, I am loading iPXE from an ISO in a VM. No scripts or anything, just trying to PXE Boot. The results have been the same if I chainload on real hardware or boot iPXE from USB.

WDS 2012 is setup in proxyDHCP mode. I can boot to it fine from normal PXE and old versions of gPXE from 2010. This also worked with iPXE in the past, although I have not needed it recently so I do not know when it broke. The WDS server has remained unchanged except for windows updates.

The the current version of iPXE (from this link: http://boot.ipxe.org/ipxe.iso) gives me this:






The first thing I noticed is that WDS thinks it was launched in DHCP Referral mode. This is NOT the case. The DHCP server on this subnet does not provide a filename or next-server. WDS is on a different server then DHCP and runs in proxyDHCP mode. The config page in iPXE makes it appear that everything is setup correctly. Booting from this server in the same VM without iPXE does not show a DHCP Referral.

Any ideas? Thank you.