#!/bin/sh

one=`dd if=/dev/random bs=1 count=1 2>/dev/null | xxd -p`
two=`dd if=/dev/random bs=1 count=2 2>/dev/null | xxd -p`
thr=`dd if=/dev/random bs=1 count=2 2>/dev/null | xxd -p`
sipcalc fd${one}:${two}:${thr}::/48