A project whose aim is to update the printing subsystem for the NetBSD operating system to use the ppbus system developed on FreeBSD, another open source BSD system.
A paper describing the technical challenges in porting NetBSD to a handheld devices, as well as reasons one would wish to install it on one. [EuroBSDCon] [PDF] (October 29, 2004)
A paper by Ignatios Souvatzis entitled "The New Link-Level Independent ARP Subsystem of NetBSD" about kernel internals; how the NetBSD ARP subsystem has been changed to differ from traditional 4.4BSD; and how to change your ethernet driver to conform. [Daemonnews.org] (September 1, 1998)