[nzlug] Uncommon Transport Protocols + Linux

[Raimund Eimann]

Hi,

On Friday 05 January 2007 19:48, Martin D Kealey wrote:
> On Fri, 5 Jan 2007, Daniel Pittman wrote:
> > Raimund Eimann <raimund at cs.auckland.ac.nz> writes:
> > > I suppose that packets with uncommon transport protocols or, more
> > > precisely protocol numbers for which no handler (such as a TCP stack)
> > > exists on a host are simply dropped on arrival?
> >
> > No -- they should have an ICMP error generated informing the sender that
> > the protocol in question is not supported.
>
> Err ... mais si! Look a level further down the protocol stack if you
> will...
>
> We're talking about things *other than IPv4*. Sending an IPv4 response
> won't help anyone.

No, we talking about protocols above IPv4. Specifically they are indicated by 
the IPv4 protocol header field.

Cheers,
Raimund

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