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|
#!/bin/bash
#
# Set the MAC address of any/all ethernet cards
# for DECnet
#
# Parameters:
#
# $1 - DECnet address in the usual area.node format
# $2 - optional list of ethernet card names to set.
#
calc_ether()
{
MACADDR=""
ADDR=`echo $1 | sed -n 's/\([0-9]*\.[0-9]*\)/\1/p'`
AREA=`echo $ADDR | sed -n 's/\([0-9]*\)\.\([0-9]*\)/\1/p'`
NODE=`echo $ADDR | sed -n 's/\([0-9]*\)\.\([0-9]*\)/\2/p'`
[ -z "$AREA" ] && AREA=0
[ -z "$NODE" ] && NODE=0
if [ "$NODE" -le 1023 -a "$NODE" -ge 1 -a "$AREA" -le 63 -a "$AREA" -ge 1 ]
then
NUM=$(($AREA*1024 + $NODE))
MACADDR="`printf \"AA:00:04:00:%02X:%02X\" $((NUM%256)) $((NUM/256))`"
else
exit 1
fi
return 0
}
calc_ether $1
if [ $? != 0 ]
then
exit 1
fi
CARDS=$2
if [ -z "$CARDS" ]
then
exit 0
fi
if [ "$CARDS" = "all" -o "$CARDS" = "ALL" ]
then
CARDS=`cat /proc/net/dev|grep eth|cut -f1 -d':'`
fi
set_default=""
for i in $CARDS
do
ifconfig $i hw ether $MACADDR allmulti up
if [ -z "$set_default" -a -f /proc/sys/net/decnet/default_device ]
then
echo $i >/proc/sys/net/decnet/default_device
set_default="DONE"
fi
done
|
