[nzlug] Routing Tables

[Nevyn]

Hi,

I've been having a bit of a play with routing tables. Basically in my
machine I have 2 ethernet devices - eth0 and eth1.

eth1 is a link to the internet. I don't really want eth1 to talk to
this computer. Instead, I'm running a virtual machine on the computer
and only really want it talking to the virtual machine.

So I set up my routing table as follows:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0      *                    255.255.255.0   U     0      0
     0 eth0
default              vm.nevnet     0.0.0.0              UG   0      0
      0 eth0

However, if I disable the virtual machine and try to ping
google.co.nz, it comes back a sucess. In otherwords, despite there
being no information in the routing table, it still seems to find its
way.

How would I isolate eth1 so that it can only talk to the vm and not to
the system as a whole?

Regards,
Nevyn.