[K12OSN] NAT not starting on bootup

[Petre Scheie]

The power went out this morning and when it came back on the K12LTSP server booted with 
no problems, and the thin clients were able to connect as normal.  But I also have some 
Windows boxes on the same network and they get their addresses from the LTSP server and 
treat it (the server) as the default gateway, which was working.  So far, so good.  But 
the Windows boxes couldn't connect to the internet.  After poking around a bit I 
concluded that NAT wasn't running: there was no /proc/net/ipconntrack file.  The 
/etc/init.d/nat script doesn't support the 'status' switch, so I just ran 'service nat 
start', /proc/net/ipconntrack appeared, and the Windows boxes were able to get to the 
internet.

I noticed the same problem a couple months ago when I first installed the server at the 
site, that NAT was not working after bootup.  chkconfig shows NAT to be on for runlevels 
  2-5.  What would cause it to not start at boot?

Petre