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Re: [lwip-users] Communication delays, if using lwIP in different networ

From: Leon Woestenberg
Subject: Re: [lwip-users] Communication delays, if using lwIP in different network areas
Date: Thu, 11 Nov 2010 22:04:56 +0100


On Thu, Nov 11, 2010 at 5:59 PM, Benjamin Schelte
<address@hidden> wrote:
> Then the device takes a timeout of 1-2.5 seconds, before sending the
> response package (wireshark and router logs proof that the packet is sent
> after that time and not earlier).
> ...
> For me it seems like the stack in the device doesn’t know, where to send the
> data to until the next packet arrives. Is that possible somehow?
> ...
> Does anybody have a clou, what the problem could be?

Sounds like the ARP cache does not have the the gateway's Ethernet
address available.

Add tracing to see what happens in the ARP cache lookup on the outgoing packet.


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