#!/bin/sh
# $Id: ipv6-mac-to-addr,v 1.2 2018/12/03 22:33:13 friedman Exp $

# Compute stateless autoconfig address based on interface MAC
# or vice-versa

case $1 in
    [0-9a-f][0-9a-f]:[0-9a-f][0-9a-f]:* )
        exec ipv6calc -q -A geneui64 -I mac -O eui64 "$@" ;;

    *::* )
        addr=fe80::${1#*::}
        shift
        exec ipv6calc -q -A ipv6tomac -O mac "$addr" "$@" ;;

    [0-9a-f][0-9a-f][0-9a-f][0-9a-f]:* )
        addr=fe80::$1
        shift
        exec ipv6calc -q -A ipv6tomac -O mac "$addr" "$@" ;;

esac

# eof