Re: Gateway doesn't work.

["Kevin D. Colby" <kevin marcal com>]

>Cable modem is standalone.
>
>traceroute <ip of nameserver>
>
>returns:
>
>traceroute to <ip of nameserver> (<ip of nameserver>), 30 hops max, 40 byte
packets
> 1  www (<ip of linux machine>) 0.706 ms blah blah blah
>
>(In other words straight to the bit bucket.)

It never leaves the linux box?!?!?
Does it do the '2 * * *' thing a few lines or does it think it got there?

>route -n
>returns:
>
>Kernel IP routing table
>
>Destination 	Gateway        	Genmask         Flags Metric Ref    Use Iface
>208.138.40.0   0.0.0.0        	255.255.255.0   U     0      0        4 eth0
>(my subnet)
>127.0.0.0   	0.0.0.0        	255.0.0.0       U     0      0        2 lo
>0.0.0.0     	208.138.40.1   	0.0.0.0         UG    0      0        2 eth0
>		(cable modem address)

This is bizarre.  Can you ping 208.138.40.1 directly?
Can you ping anything on the subnet?

You may want to try setting a host route to 208.138.40.1 and then
the default route to it.  The net route should suffice, but perhaps
not.  This is actually similar to a problem I'm having.  I have
a machine with a similar setup that upon receipt of packets (it
is the default gateway for many others) refuses to forward them
to it's gateway.  I believe it has something to do with the fact
that its gateway is also on the same subnet.  Directly from this
machine it works, but packets from others don't.  Your problem
is easier to understand at least...  ;^)

        - Kevin Colby
          kevin marcal com