Re: END SID Without SRH

[Mark Smith <[e-mail]>]

On Sat., 8 Jun. 2019, 00:27 Ron Bonica, <rbonica=
[e-mail]> wrote:

> Darren,
>
>
>
> This isn’t a blocker. Just a surprising behavior that never struck me
> before.
>
>
>
> Assume that an SRv6 router receives a packet whose destination address is
> an END SID. The packet does not contain any extension headers at all.
>
>
>
> If the next header after the IPv6 header is IPv4 or IPv6, the router
> removes the outer header and forwards the payload.
>
>
>
> If the next header after the IPv6 header is TCP, the router discards the
> packet and sends an ICMP Parameter Problem message back to the source.
>

Per RFC 8200's definition of host and router, the packet has arrived at the
destination host, so the TCP segment should be handed up to the TCP layer
for processing, and if there is no matching TCP port, a TCP reset is sent
back to the source.

I don't think any other processing would be compliant with RFC 8200, and
operationally it would be very confusing - the value in the packet's
destination address field isn't being used by a device holding that address
as a destination address.



Regards,
Mark.


>
> Am I reading the spec correctly?
>
>
>
>                                             Ron
>
>
>
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