LHG 52 AC Netinstall problems?

I’ve got an LHG 52 AC that won’t Netinstall.

It’s running 6.44.1, tried Netinstall 6.44.5 and 6.47.7 and neither will pick it up.

I just finished installing several SXT Lite, LHG 5 and SXTsq Lite so the machine is working fine.

LHG 52 AC will not boot from Ethernet.

What’s the catch?