[Techtalk] eth0 appears to be configured correctly but can't ping across network

[Rachel Andrew]

I have a new box here that I am installing Debian on. I'm going to put 
Woody on it but have a Potato disc that I am using to set up a bare bones 
system and once I get onto the network I will dist-upgrade to Woody.

However, I am using a Netgear FA310TX PCI card of the same type that is 
installed in my existing Woody box with no problems. The driver for this is 
Tulip. I set this up during the install and it found the card and installed 
Tulip. The light is on, on the card and the hub and ifconfig returns what I 
would expect of a configured eth0.

I can ping the card and the machine name from itself but I can't ping my 
gateway (ISDN router) or any other machines on the network and I can't ping 
this box from any other machine. The only unusual thing I have found so far 
is if I do

route

localnet appears immediately, the default gateway takes about 5 minutes to 
appear. When it does appear it looks correct (as compared to my other box 
with a similar configuration) however I still have no access into or out of 
this box.

As everything looks as if it is set up correctly I'm rather bemused as to 
what could be causing the problem here. I know that the card itself is 
working as I tested it in another box, and I've plugged other things into 
the network using the cable that is now in this box just to check that it 
all operating correctly.

Any ideas? Or things I can check for?

Rachel