openwrt-xburst/package/base-files/files/etc/hotplug2.rules

DEVICENAME ~~ (tun|tap[0-9]) {
	makedev /dev/net/%DEVICENAME% 0644
	next
}

DEVPATH is set {
			makedev /dev/%DEVICENAME% 0644
}

MODALIAS is set {
			exec /sbin/modprobe -q %MODALIAS% ;
}