Re: [lwip-users] IP6 address autoconfig problem when using hub

[Ivan Delamer]

I agree 100% with Simon, I think you will see problems with other
protocols as well. I would filter out packets with your MAC address at the
MAC layer implementation (ethernet_if).

Cheers
Ivan


> Date: Sun, 9 Dec 2012 10:53:58 +0100
> From: Simon Goldschmidt <address@hidden>
> To: Mailing list for lwIP users <address@hidden>
> Subject: Re: [lwip-users] IP6 address autoconfig problem when using
>       hub
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset="us-ascii"
>
> Zach Smith wrote:
>
>> I am having a problem when I connect my IPv6 device running lwip to a
>> hub instead of a switch.
>> [..]
>> Since a hub forwards all packets received onto all ports it is echoing
>> my devices neighbor discovery messages back.
>
>
> I haven't had the chance to test lwIP on a hub, yet (we only have
> switches, all hubs were thrown away a long time ago...). However, if your
> hub really sends back all your frames, I guess IPv6 autoconfig will not be
> the only protocol having problems.
>
> I think filtering out these packets in ethernetif_input as you suggested
> is the best solution.
>
> Simon