mac2fe80.sh

#!/bin/sh
# Frank Rosquin <frank.rosquin@gmail.com>

MAC=$1
echo "Calculating ipv6 for $MAC"

LEAD=`echo $MAC|awk -F':' '{ print $1}'`
FIXED=`echo $MAC|awk -F':' '{ print tolower($2":"$3":"$4":"$5":"$6)}'`

# TODO: TOGGLE this
SIGNIF=`printf "%02x" $((0x$LEAD | 0x02))`
echo $SIGNIF
# SIGNIF=`printf "%02x" $((0x$SIGNIF ^ 0x02))`
NMAC="$SIGNIF:$FIXED"
echo $SIGNIF

LEAD=`echo $NMAC|awk -F':' '{ print $1$2":"$3}'`
END=`echo $NMAC|awk -F':' '{ print $4":"$5$6}'`

echo "Connect to:  fe80::${LEAD}ff:fe${END}%<device>"