-TYPE is one of arch, plain, fai, or : for no pxe server.
-HOST makes the pxe server only for that specific host
-
+TYPE is one of arch, plain, fai.
+HOST is a hostname known to the dhcp server, or default for all, or none to disable
+
+-r Don't redeploy fai config. For example, if there is a different host
+ that is mid-install.
+-a Wait for 2 dhcp acks, then disable the pxe server after a delay.
+ First ack is for pxe boot, 2nd ack is for os boot. Sometimes
+ on debian, there is a 3rd one shortly after the 2nd. I can't remember
+ exactly why this caused a problem, but I'm hoping the sleep
+ will take care of it.
+-w Initially setup pxe, then wait like -a.