CowboyNeal from the brand-spanking dept.
jschauma writes "NetBSD's Andrew Brown has committed a complete rewrite of the kernel's sysctl infrastructure. To test these changes, he cross compiled 150 kernels for 30 architecures to see where some problems might come up. Additional information can be found in Andrew's email to current-users."
Most public domain software is free, at least at first glance.