+Using this, you can boot into fai with pxe-kexec without changing the
+dhcp server. Note, if you are booting using fai-cd, the pxe config does
+nothing, and only flags affecting FAI_ACTION will have any affect. You
+can change the fai flags in the grub config, for example in
+./grub.cfg.autodiscover, or at runtime by editing a grub menu option.
+We could probably also set FAI_FLAGS the same way we set FAI_ACTION,
+but I haven't tried it.
+
+HOSTNAME|IP|default Sets the host to enable it for. No argument
+ disables pxe config for all hosts, but leaves nfs
+ server alone. Use faiserver-disable to disable the
+ nfs server.
+
+-S sets FAI_ACTION=sysinfo, and remove fai flag reboot.
+ Usefull for doing a system recovery. It reboots automatically anyways :(
+-k Add serial port output for kgped16
+-i sets FAI_ACTION=inventory and remove fai flag reboot.
+ I'm not sure what this is usefull for.
+-b Setup bonded ethernet.
+--no-r Tell fai-chboot not to reboot when its done. This is implied by -i and -S.
+-h|--help Print help and exit.
+
+EOF
+ exit $1
+}