Comment by tptacek

3 months ago

From 2022: https://www.samd.is/2022/06/13/egress-XDP.html

You can also use XDP for outgoing packets for tap interfaces.

This is why I am always skeptical when anyone writes that they are the first to do something… the added caveat is always, “that we know of”

  • "Who did it first" is not interesting to me, but what they're doing isn't a "loophole"; that's all I'm concerned with.

    • It's a weird choice of word (especially in the company name, honestly). To my mind, loopholes are things that get closed. I would not want to be relying on a loophole for anything.

      "Whoops, sorry, an innocent kernel update broke your entire production!"

      1 reply →

Similar fun as the time I discovered one could use IFB to set qdiscs on incoming traffic (why would one would do that is left as exercise to the reader, but my journey included using the 'plug' qdisc and tcp-checkpoint/restore). The Linux kernel has so many building blocks....