Weird network problem...

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Hi everyone,

we have a strange problem with our new LAN. The setup is very simple

   hal      (IP 192.168.0.3, Linux 2.2.13)
    |
    |
   dave     (IP 192.168.0.4, Linux 2.2.13)
    |
    |
  ramboy    (IP 192.168.0.2, Win98)
    |
    |
  proxy     (IP 192.168.0.1, NT4.0 with masquerading router 
		to the Internet)

Everything is fine, except that the two Linux boxes cannot reach each other.
They can both contact ramboy, proxy and the Internet, but not each other. The
problem disappears, if the link between dave and ramboy is removed, leaving
dave and hal alone.
Using KSnuffle I saw that ARP packets from hal do not show up on dave and vice
versa. If e.g. hal sends a 'who-has ramboy', dave sees only the 'is-at' reply
from ramboy. If proxy queries ramboy, dave sees both packets.
Even entering the MACs manually into the ARP tables of dave and hal does not
work.

Any ideas?

Thanx in advance,
	Boogaloo (Katrin Niemann)
	Pink (Benjamin Niemann)
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