+####################
+# xxx tmp for a demo
+# there *must* be a better way to do that
+# the thing is the slice sees several tap devices at this point, which is odd...
+# for now I'm searching the tapname based on some hint - the vnet ip range
+VNET=10.0.16
+function show_mac () {
+ ifnames=$(grep : /proc/net/dev | cut -d: -f1 | awk '{print $1;}')
+ tapname=""
+ for ifname in $ifnames; do
+ ifconfig $ifname | grep -q "$VNET" && tapname=$ifname
+ done
+ if [ -z "$tapname" ] ; then
+ echo "no-tap-found-for$VNET"
+ exit 1
+ fi
+ ifconfig $tapname | grep -i hwaddr | awk '{print $5;}'
+}
+