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Re: Multi homing

If both network interfaces have addresses on the same subnet then your
traffic "should" go out the top checked port. If the interfaces are on
different subnets then any traffic destined for the local subnets will
be sent out the appropriate interface. Traffic destined off-network
will go to the default route (which tracks the top checked port).

I think this is probably my problem, but I am aware how I could work
around it.

Index 1) Ethernet Port is attached to my cable modem, and I get my IP
address through DCHP, and the subnet mask is 255.255.255.0

Index 2) Airport is online to my airport base station who is assigning the
TCP/IP address from using the standard setting (through DCHP)

Range of IP address from 10.0.1.n (where n is 2 to 200)
Subnet mask is 255.255.255.0 ( I cannot change this ).

So I get an address of 10.0.1.2 and subnet of 255.255.255.0

But I want for IP traffic for address's (10.0.1. 1 to 255 ) to go through airport.

Any ideas how I would make this work ??, as I guess this doesn't fall into
the default case. As I would like specific address's to be routed through
particular interface.

It should "just work". As I mentioned in an earlier e-mail, traffic destined for a local subnet (whatever subnet is associated with your cable service) would go out the ethernet port & traffic for the 10.0.1.x network would go out via AirPort. Everything else would be passed along to the default route (which, in your case, would be the cable modem). The only thing that would complicate things would be if your cable modem also assigns you an address on the 10.0.1.x subnet.

Try the following:

route get 10.0.1.1
route get x.x.x.x (some address on the same subnet as your ethernet port)
route get y.y.y.y (any valid address not on either of your subnets)

- Allan
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