[K12OSN] Mixed network environment - using LTSP server for routing too

[Hamlesh [Personal]]

> That means you didn't use the K12LTSP distro that installs a lot of nice
> stuff for you.

Ah according to k12ltsp.org K12Linux was the more modern version, so I
assumed that was the better version!


> Below is the 'nat' init script.  Change the PUBLIC_ETHERNET interface at the
> top if needed and fix any wrapped lines.

Tried that and executed it, still no joy :(

H