The link for this HN submission is unfortunately not a good portal wrt plan9. See [1] and [2].

1. https://groups.google.com/forum/#!topic/plan9port-dev/OqSvUD...

2. https://github.com/9fans/plan9port/issues/79

Might just be linkrot. I know there is a lot of it on the Plan9Port page.

A search for Plan9Port brought up the Github page for me.