The bits in <> use the same labels as the current he.net 'Tunnel Details' pages; and note that cutting and pasting addresses from the page which include the /64 at the end isn't helpful

I added lines for up and down (Ubuntu Koala alpha):
Code:
auto he-ipv6
iface he-ipv6 inet6 v4tunnel
endpoint <Server IPv4 address>
local <Client IPv4 address>
ttl 255
address <Client IPv6 address>
netmask 64
mtu 1480
up ip -6 route add default dev he-ipv6
down ip -6 route del default dev he-ipv6
iface he-ipv6 inet6 v4tunnel
endpoint <Server IPv4 address>
local <Client IPv4 address>
ttl 255
address <Client IPv6 address>
netmask 64
mtu 1480
up ip -6 route add default dev he-ipv6
down ip -6 route del default dev he-ipv6
