Client Side:
#!/bin/sh
DEVICENAME=edu0
MYIP=`/usr/bin/perlip`
PEERIP=216.194.67.155

LAN=eth0
MYIP=3ffe:401d:2037:801::1/64
MYLINK=3ffe:401d:2037:803:ffff::2/80

/sbin/ip tunnel add $DEVICENAME mode gre local $MYIP remote $PEERIP ttl 255
/sbin/ip link set $DEVICENAME up
/sbin/ip addr add $MYLINK dev $DEVICENAME
/sbin/ip -6 route add default dev $DEVICENAME metric 5
/sbin/ip -6 addr add $MYIP dev $LAN

-----------
Server Side:
#!/bin/sh
DEVICENAME=edu0
MYIP=216.194.67.155
PEERIP=`dnsip static.abss.ca`

MYLINK=3ffe:401d:2037:803:ffff::1/80
ROUTE=3ffe:401d:2037:801::/64

/sbin/ip tunnel add $DEVICENAME mode gre local $MYIP remote $PEERIP ttl 255
/sbin/ip link set $DEVICENAME up
/sbin/ip addr add $MYLINK dev $DEVICENAME
/sbin/ip -6 route add $ROUTE dev $DEVICENAME