Re: [lwip-users] how to handle ARP request that's not for me

[Leon Woestenberg]

Hello,

On Tue, Feb 17, 2009 at 7:54 PM, dogeye <address@hidden> wrote:
> so how about this situation:
> 1. a device, A,  in a network using static IP for a while already, so
> it and the server knows each other's MAC.
> 2. device A changed its Ethernet card and keeps it's static IP. Then
> later server sends out an ARP request for an IP other than A's
> 3. in current implementation of lwip, A uses this ARP request to
> update its own table.
> 4. when A sends a message to server, it doesn't send out ARP request
> because it has server's MAC in its table already.
> 5. Therefore, server still has the old IP and MAC pair in its table,
> and it will cause problem until current entry expires.
>
Sorry, I do not follow you, first two questions:

Server does not run lwIP in your explanation?
device A runs lwIP?

I do not see how 3 should happen.

Regards,
-- 
Leon