On Aug 11, 2009, at 18:01 , Joel M. Halpern wrote:
Given that LISP ITRs work by intercepting packets that are not
addressed to them, a host implementation would need to be able to
intercept packets "in the stack". That is going to need some
ability to modify kernel behavior.
We already did it for FreeBSD. (http://inl.info.ucl.ac.be/softwares/openlisp
)
The latest version (not yet publicly available) supports IPv6, and yes
it ignores the checksum (will be changed if the WG reaches a different
consensus).
This is possible in OpenLISP since we capture the packet at IP level,
before actually forwarding it to the UDP level.
The same applies for outgoing packets. They are captured at IP level
just before the routing table lookup. This allows to encap (if
necessary) no matter if the packet is coming from the upper layers or
from the forwarding module.
Luigi
(Yes, I think we will see LISP enabled hosts. I don't think
mobility is the only case where this will happen. But it will mean
someone has modified the kernel to do so.)
Yours,
Joel
Dino Farinacci wrote:
Hi Dino,
On Aug 11, 2009, at 11:37 AM, Dino Farinacci wrote:
On Aug 8, 2009, at 8:34 PM, Dino Farinacci wrote:
The spec says ETRs MUST ignore the UDP checksum field. This is
what the LISP authors intended and has been implemented this way.
The spec says ITRs MUST set the UDP checksum field to 0.
Could you tell us how to achieve this on commonly deployed
desktop software/hardware that has two properties:
We don't want this rule on commonly deployed desktop hosts.
I am not sure what you are saying here. I can think of two
possibilities:
(1) You don't want LISP to be implemented on commonly deployed
desktop hosts.
Right, it is a network based solution.
(2) You want to change the document to state a different rule, so
that LISP can be implemented in a compliant manner on desktop hosts.
That is not what I am suggesting.
Dino
Could you elaborate?
Margaret
_______________________________________________
lisp mailing list
l...@ietf.org
https://www.ietf.org/mailman/listinfo/lisp
_______________________________________________
lisp mailing list
l...@ietf.org
https://www.ietf.org/mailman/listinfo/lisp
--------------------------------------------------------------------
IETF IPv6 working group mailing list
ipv6@ietf.org
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
