Apple Thunderbolt Ethernet LINK DOWN

[gzebedin]

Hello @ll,

I'm trying to boot Macbooks via IPXE into a Linux System. I created a NBI which delivers the ipxe.efi to the Macbook. This part works fine.
IPXE also recognizes the Thunderbolt adapter as 14e4-1682 and tells me
[link status: Down (http://ipxe.org/38086193)]
Waiting for link up on net0................. Down (http://ipxe.org/38086193)

The Link never goes up.
On the switch I see the Linkstatus going down and up everytime ipxe tries but there seems to be a problem with the driver.

Has anybody had a similar problem or knows how to fix it. I know for sure there was one version of IPXe maybe 2-3 years ago where this worked. But I never noted the release and after recompiling a new start script via rom-o-matic it stopped working :-(
I also found THIS thread about a similar problem but there was no solution mentioned.

Thank you for helping out!

G.