#!/bin/bash

read -p -r "IPMI MAC: " macaddr
echo -n "$macaddr" | xxd -r -p | openssl dgst -sha1 -mac HMAC -macopt hexkey:8544E3B47ECA58F9583043F8 | awk '{print $2}' | cut -c 1-24 | sed 's/./&-/4;s/./&-/9;s/./&-/14;s/./&-/19;s/./&-/24;'