update ipinfo
- add decoder for teredo, 6to4

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>
IPv6 address printing : do not compress to :: if there is only one '0' block

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>
update isatap ll addresses and add ISATAP decoder

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>
add some known multicast addresses

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>
update decode_mcast_ipv6

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>
decode IPv6 Multicast embedded RP  addresses

Signed-off-by: Etienne Basset <etienne.basset@ensta.org>