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I had to look it up: https://en.m.wikipedia.org/wiki/Small_form-factor_pluggable_...

Yes that is what they are, But what SFP actually has the ability to be programmable to the degree that is needed to support Wireguard??

https://blog.benjojo.co.uk/post/smart-sfp-linux-inside

This SFP has an embedded ARM processor running Linux. It’s pretty meta, but one could imagine a wireguard control network for these. The article even describes using wireguard-go on the embedded side.

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