how do i set up the next hop router

[pradnyesh sawant]

this query might sound very trivial, but i did not find any 
mention of it in the archives. it would be very helpful, if any 
one could tell me how to set up the next hop router for certain 
destination addresses.

actually i am setting up the Click router in my college lan, which 
has a gateway. i have changed the gateway IP addr of 1 of the 
machines (client) to point to my machine. i want to route the 
packets i receive from the machine, and forward them to the actual 
gateway (the IP addr of which is known to me), so that i can 
access the net from the client. although, i receive packets from 
the client m/c, i am not able to forward them to the actual 
gateway.

the m/c on which i am running the Click router, has only 1 NIC 
card, so i have to transfer both the incoming as well as outgoing 
packets on the same interface.
although i know the IP addr of the gateway, i don't know it's 
ethernet addr, which is supposed to be known using ARP, but since 
i've got a singe NIC card, sending the packet through the same 
interface again does not help.

any help will be greatly appreciated.



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