Mike Mestnik wrote:

>> My point is: how do you send packets back to the sender if the packet
>> came in on a connected interface that does not host the network that it

> The packet came in.  There should be a MAC(ethernet) address that it came
> from.

mac address changes at every hop. The mac is *always* going to be your
next-hop router's address. No use sending it back to it, it doesn't care.

/phil


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