Re: IPv6 WG Last Call:draft-ietf-ipngwg-icmp-v3-05.txt

[Pekka Savola <pekkas@xxxxxxxxxx>]

On Wed, 27 Oct 2004, Fred Templin wrote:
> Pekka Savola <pekkas@xxxxxxxxxx> wrote:
> > I can't  figure how ICMPv6 could notice any further data corruption in any
> > case, so I see no direct justification in *this* spec.)
>
> We are speaking here about the case of the IPv6 layer noticing data corruption
> in a received packet and then sending an ICMPv6 error message with the new
> Parameter Problem code back to the source. Data corruption can be detected,
> e.g., if the link layer has a way to inform the IPv6 layer of packets received with
> errors - but this is not necessarily the *only* example.

OK.  Are there link layer specifications which do this?  And if so, 
are there implementations that do that?

I have no doubt that there may be link-layers which might detect or be 
able to detect corruption. But the typical approach then, AFAICS, is 
either to silently discard packet, or to try to retransmit at 
link-layer if there was a link-layer problem.

--
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

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