diff --git a/tools/multiple-bgpd.sh b/tools/multiple-bgpd.sh
index 001e91c..028ad69 100644
--- a/tools/multiple-bgpd.sh
+++ b/tools/multiple-bgpd.sh
@@ -6,22 +6,24 @@
 VTYBASE=2610
 ASBASE=64560
 BGPD=/path/to/bgpd
-PREFIX=192.168.145
+PREFIX=192.168.145.
+#PREFIX=3ffe:123:456::
+ADDRPLEN=32
 CONFBASE=/tmp
 PIDBASE=/var/run/quagga
 CHOWNSTR=quagga:quagga
 
 for H in `seq 1 ${NUM}` ; do
 	CONF="${CONFBASE}"/bgpd${H}.conf
-	ADDR=${PREFIX}.${H}
+	ADDR=${PREFIX}${H}
 	
 	if [ ! -e "$CONF" ] ; then
 		# This sets up a ring of bgpd peerings
 		NEXT=$(( ($H % ${NUM}) + 1 ))
 		PREV=$(( (($H + 3) % ${NUM}) + 1 ))
-		NEXTADDR="${PREFIX}.${NEXT}"
+		NEXTADDR="${PREFIX}${NEXT}"
 		NEXTAS=$((${ASBASE} + $NEXT))
-		PREVADDR="${PREFIX}.${PREV}"
+		PREVADDR="${PREFIX}${PREV}"
 		PREVAS=$((${ASBASE} + $PREV))
 		
 		# Edit config to suit.
@@ -44,10 +46,10 @@
 			 neighbor ${PREVADDR} peer-group default
 			!
 			 address-family ipv6
-			 network fffe:${H}::/48
-			 network fffe:${H}:1::/48 pathlimit 1
-			 network fffe:${H}:2::/48 pathlimit 3
-			 network fffe:${H}:3::/48 pathlimit 3
+			 network 3ffe:${H}::/48
+			 network 3ffe:${H}:1::/48 pathlimit 1
+			 network 3ffe:${H}:2::/48 pathlimit 3
+			 network 3ffe:${H}:3::/48 pathlimit 3
 			 neighbor default activate
 			 neighbor default capability orf prefix-list both
 			 neighbor default default-originate
@@ -64,8 +66,8 @@
 	# You may want to automatically add configure a local address
 	# on a loop interface.
 	#
-	# Solaris: ifconfig vni${H} plumb ${ADDR}/32 up
-	# Linux:   ip address add ${ADDR}/32 dev lo 2> /dev/null
+	# Solaris: ifconfig vni${H} plumb ${ADDR}/${ADDRPLEN} up
+	# Linux:   ip address add ${ADDR}/${ADDRPLEN} dev lo 2> /dev/null
 	${BGPD} -i "${PIDBASE}"/bgpd${H}.pid \
 		-l ${ADDR} \
 		-f "${CONF}" \