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# store/set MAC address for given interface
NS2MacStore=/etc/NS2
[ ! -d ${NS2MacStore} ] && mkdir ${NS2MacStore}
if [ -z "$1" ]
then
exit 0
fi
if [ -f ${NS2MacStore}/$1.mac ]
then
# set this mac
/sbin/ifconfig $1 hw ether `cat ${NS2MacStore}/$1.mac`
else
# remember current mac for all times
X=`/sbin/ifconfig $1 | grep HWaddr`
X=${X#*HWaddr } # strip till HWaddr
X=${X%% *} # remove trailing spaces
echo ${X} > ${NS2MacStore}/$1.mac
fi
exit 0
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