>>>>> On Tue, 18 Dec 2018 16:33:59 +0100, "e.fernb...@gmx.net" 
>>>>> <e.fernb...@gmx.net> said:

    > When connecting a client with PXE boot (Realtex PXE B04 D00) it shows
    > the DHCP ... and a circling I for a while then PXE exits with the "boot
    > failure" message.
I think you need to debug some networking problem.

Did you enable tftp on the server? Do a DHCP is running in this
subnet?


Have a look at
7.3.1. Debugging the network traffic


    > How do I further diagnose this? Can I somehow test if the server tries
    > to issue an IP?
tcpdump is your friend.


    > What configuration does the ethernet card of the system
    > running the FAI server have to have?
No special config. Just an IP address, and your dhcpd.conf should use
this network card and must be configured for this subnet.

-- 
regards Thomas

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