PXE boot failing on Wyse 5060

[ahaeder]

FOG version 1.6.0-beta.5136, https enabled
PXE works great with Wyse 5070 thin clients and Dell Optiplex 3000 thin clients.

Tried my first 5060 today.

Wyse 5060, BIOS 1.0J (2018-11-06), UEFI boot, Secure Boot disabled. PXE acquires DHCP, downloads EFI binary and autoexec.ipxe. Even an autoexec.ipxe containing only:

#!ipxe
echo HELLO
sleep 30

causes an immediate reboot. No requests for default.ipxe, boot.php, bzImage, or init.xz ever reach the FOG server. Same FOG server works perfectly with Wyse 5070 and Dell OptiPlex systems.

I’ve tried handing out all the different *.efi devices in my /tftpboot dir, all do the same thing. I know this is a really old system, it’s just weird that it’s just rebooting so early in the ipxe process.

Has anyone seen this before? THanks