(usagi-users 01852) Re: ICMPv6 Redirect Question

[Kirk Bollinger <kirk@xxxxxxxxxxx>]

On Sun, 29 Sep 2002, Peter Bieringer wrote:

>
>
> --On Saturday, September 28, 2002 10:12:58 AM -0700 Kirk Bollinger
> <kirk@xxxxxxxxxxx> wrote:
>
> >
> >
> > I'm trying to decode an ICMPv6 redirect message.
> >
> > type	 	137 		0x89
> > code		0		0x0
> > Checksum	13355		0x342b
> > Target Add	2000:315::2
> > Dest Add	2000:316::2
> >  ICMP v6 Ooption Dest Link Layer
> > Type		2		0x2
> > Length		1		0x1
> > Link Layer Address	0:0:316:495:0:0:0:6030
> > redirect header
> >
> >
> > I don't understand the link layer address in the above icmp redirect
> > packet fragment,
> >
> > The original packet was from 2000:315::2 -> 2000:316::2 which are
> > two subnets on a single link and the pakcets are using the router.
> >
> > any help would be appreciated.
>
> Do you catch raw data of this packet e.g. with tcpdump?
>


I captured this using the capture application from the traffic generator I
was using -> www.ixiacom.com. I'm testing/studying IPv6 in a mixed
Linux/commercial router environment. This particular redirect was not
generated by linux and/or the Usagi kernel. I have not found anything
which details the link option portion of the redirect packet.

thanks!

-kirk