Hoi,

I would suggest not matching (only) MAC but (foremost) the ethertype, and
then punting those packets into the TAP, take a look at VLIB_REGISTER_NODE
(lip_punt_node) in src/plugins/linux-cp/lcp_node.c, contributions are
welcome.

groet,
Pim

On Mon, Jan 23, 2023 at 6:06 PM <agv...@gmail.com> wrote:

> Hoi Pim,
>
> As for distinguishing  IS-IS packets, I think that should not be really
> difficult,  it's just all the packets with specific DST MACs:
> 09:00:2b:00:00:05, 09:00:2b:00:00:14,09:00:2b:00:00:15.
> It's hard to imagine situation when they are needed to be processed by
> DataPlane.
> 
>
>

-- 
Pim van Pelt <p...@ipng.nl>
PBVP1-RIPE - http://www.ipng.nl/
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