IPv6 on cappadocicum

Hi Peter. During the dev meeting Jake and other authority operators asked for a DocTor check for the reachability of their IPv6 ORPort. Presently five authorities have an IPv6 address and five don't.

tor26      => 2001:858:2:2:aabb:0:563b:1526
gabelmoo   => 2001:638:a000:4140::ffff:189
longclaw   => 2620:13:4000:8000:60:f3ff:fea1:7cff
maatuska   => 2001:67c:289c::9
urras      => has an ipv6 address, but authority is currently down
moria1     => no ipv6 address
dizum      => no ipv6 address
Tonga      => no ipv6 address
dannenberg => no ipv6 address
Faravahar  => no ipv6 address

This is all well and good, and I started writing a DocTor check, but I'm green to IPv6 and running into an issue on cappadocicum...

% ping6 2001:858:2:2:aabb:0:563b:1526
connect: Network is unreachable

% test -f /proc/net/if_inet6 && echo "Running kernel is IPv6 ready"
Running kernel is IPv6 ready

% lsmod | grep -w 'ipv6' | wc -l
0

No doubt something simple. Most Debian tips such as a 6to4 config look to require elevated permissions. If this is something I can/should sort out myself then tips welcome. :)