I just recovered the project information of the atusb IEEE 802.15.4 USB adapter since qi-hardware is now defunct. The page and all other resources/binaries/... (full backup) now live at https://people.osmocom.org/werner/wpan/web/ and a git repo with compiling tools can be found at https://gitea.osmocom.org/qi-hardware/ben-wpan #oshw #wpan #ieee802_15_4
Ben-WPAN Overview

Contiki NG, Linux WPAN and 6LoWPAN | mk16.de

Can Contiki NG and Linux communicate via 6LoWPAN / IEEE 802.15.4?