[En-Nut-Discussion] error in ipin.c?!

[ivesworking]

i able to perform multicast with Nut OS
the key point is modify the driver & IPin.c

wfloh
----- Original Message ----- 
From: <llsoft at quantentunnel.de>
To: <en-nut-discussion at egnite.de>
Sent: Thursday, June 08, 2006 7:46 PM
Subject: [En-Nut-Discussion] error in ipin.c?!


> Hi,
>
> currently I'm extending Nut/Net for multicast.
> I found maybe an error in "ipin.c"
>
> In function NutIpInput an ICMP response 'unreachable protocol' is sent if 
> the protocol is unknown.
> According to RFC 1122, section 3.2.2, no icmp response should be sent if 
> destination address was broadcast or multicast.
> Therefore, almost at the end of the function, the line before freeing the 
> net buffer
>
> if (!NutIcmpResponse(ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, 0, nb))
>
> should be changed to
>
> if (bcast || !NutIcmpResponse(ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, 0, nb))
>
>
> Am I right?
>
> Jan
>
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