Up to now, I've had a nice simple configuration where
the internal Blue Tree network was a single subnet,
connected to the outside world via a single gateway.
This subnet is 192.168.3/24.
I'm building a test lab which I want to put on 192.168.4/24,
and use a dual-homed Linux box as a router (sitting on .3.15
What's the best way of setting up the routing such that all
machines on the .3 network will use .3.15 as the gateway to
the .4 network?
I realize that one possibility is to add a static route to the
existing gateway (.3.5), and let the other machines' default
route take care of it, but that would involve each packet
going across the wire twice.
The majority of these machines are Windows, so running routed is
probably not an option :-)
BTW, I don't want to do NAT on the internal gateway machine
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