Originally Posted by semarmendemx
I'm curious whether there are any requirements from best practice point of view to restart freebsd box periodically.
That seems to be conventional thinking with regards to Windows servers, but I've never known it to be recommended for any Linux or *BSD server. Many of my Linux systems have been up and running 900 days, though I do follow the OpenBSD team's advice and reboot my OpenBSD machines (for operating system upgrade) once every six months (unless it's CURRENT, in which case reboots come much, much sooner =).
IMHO, if there would be any reason to make it a hard requirement, software and security updates would be it...and even then a reboot is only necessary for kernel updates.