In FreeBSD 6.2, you could add the polling option in /etc/rc.conf for a given interface or specify it manually when using ifconfig. This enabled device polling if you enabled it when recompiling your kernel. In FreeBSD 6.3 polling is no longer an option for ifconfig. So, make sure it is not specified in /etc/rc.conf for your network interfaces, otherwise when you restart, your network interfaces will not have an IP address set. Thus, leading to a rather annoying walk over to the server room.