[K12OSN] Clients won't boot - PXE-E53 No boot file received

[Barry R Cisna]

Mel,

Stupid question. Did you try switching your network wire into the nic
port ,that you "think" it shouldn't go into?
When you do an update /kernel ,especially, the nics get
reassigned/reversed. You said you "redone" this server?
Your dhcpd-ltsp.conf file looks correct. The only other thing that comes
to mind is sometimes white spaces ( very rarely) in the dhcp file can
cause weirdness without being able to actually 'see' it.
If you do an 'service dhcpd restart' a couple times do see the actual
'OK' (green) all the times? If dhcp appears to start but you never see
the 'green Ok's ' you have a white space in the dhcp file. Voice of
experience talking here:-)
Let us know what you find.

Barry Cisna