That is similar to what happens in some GPON-ONT SFPs, some run a full small 
Linux distribution like OpenWrt inside.... though for ethernet that is 
unexpected.
This is also similar to SFP VDSL "modems" which likely run their own embedded 
OS as well inside the SFP package (at a time there was even a PCI VDSL2 "modem" 
that was actually running its own embedded system on the PCI board, IIRC, it 
pretended to the main computer to be an ethernet NIC).

Regards
        Sebastian



> On Jan 13, 2022, at 15:18, Dave Taht <dave.t...@gmail.com> wrote:
> 
> running linux, of course.
> 
> https://blog.benjojo.co.uk/post/smart-sfp-linux-inside
> 
> -- 
> I tried to build a better future, a few times:
> https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org
> 
> Dave Täht CEO, TekLibre, LLC
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel

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