IPv6 - Internet protocol of Next Generation

• http://www.routemeister.net/projects/sipcalc/index.html

 sudo apt-get install sipcalc

see: Building an IPv6 router with GNU/Linux and Official NAPTD download site

patched version (ubuntu/debian): naptd-0.4.aufbix1.tar.gz

Ubuntu 9.4 notes - should compile out-of-the-box

Debian 5.0 notes
you need changes around 690 line in src/alg_dns.cc:

 + next_byte = v6_address->in6_u.u6_addr8[15 - i];
 - next_byte = v6_address->__in6_u.__u6_addr8[15 - i];

The essential initial guidelines are:

        ISP             /32
                        Enough for 4billion ISPs
                        Enough for each ISP to support 65,536 /48 customers or 16.7M /56  
                        customers, etc. Larger ISPs can get more than a /32 if needed.


        End Site        /48
                        Enough for 65,536 /64 subnets
                        Larger organizations can get more than a /48 if needed.

        Single Subnet   /64
                        Enough for more hosts that most of us can imagine on a single subnet.
                        Support for 64 bit MAC addresses
                        Support for stateless autoconfiguration

• https://fedorahosted.org/dhcpv6/
• http://klub.com.pl/dhcpv6/

Version: 0.1.0, 2007-09-08
Philipp Kolmann <philipp at kolmann.at>

Since 2.6.19 linux has support for CONFIG_IPV6_MULTIPLE_TABLES (Support multiple routing tables) and since 2.6.20 CONFIG_IPV6_SUBTREES (Enable routing by source address or prefix).

With this infrastructure it is possible to have multiple IPv6 addresses on different subnets (read differnet SixxS tunnels to different POPs) working. With a normal setup, you would end up with one default route and route all traffic through this link.

My setup is the following:

One SixxS tunnel Maribor, Slovenia (sixxs-si), and one to Hamburg, Germany (sixxs-de).

First added a new table to /etc/iproute2/rt_tables:
echo "100 sixxs" >> /etc/iproute2/rt_tables

In /etc/network/interfaces I have the following setup (Static IPv4 Adress):

auto sixxs-si
iface sixxs-si inet6 v4tunnel
  address 2001:1::2
  netmask 64
  endpoint 212.18.63.73
  ttl 64
  up ip link set mtu 1280 dev sixxs-si
  up ip route add default via 2001:1::1 dev sixxs-si

auto sixxs-de
iface sixxs-de inet6 v4tunnel
  address 2001:ffff::2
  netmask 64
  endpoint 212.224.0.188
  ttl 64
  up ip link set mtu 1280 dev sixxs-de
  up ip -6 rule add from 2001:ffff::2 table sixxs
  up ip -6 route add default via 2001:ffff::1 table sixxs
  down ip -6 rule del table sixxs
  down ip -6 route flush table sixxs

IPv6 adresses are not the actual ones.