Agenda: dns-enabling-ipv6.txt

Enabling IPv6
-------------

Remember IPv6 is 128 bits:

340.282.366.920.938.463.463.374.607.431.768.211.456 unique values

For this workshop, we use a Unique Local Address ( fc00::/7 ).

We have registered: the prefix fdba:dc55:48c7::/48

In full notation: fdba:dc55:48c7:0000:0000:0000:0000:0000 prefixlen 48

I. Manual configuration
-----------------------

Manually, we will use the following addressing scheme:

fdba:dc55:48c7:0000:0000:0000:00xx:000y/64  (LANs are 64 bit in IPv6)
|<- prefix ->||site||<----- LAN ------>|

... where xx = your group number, and y is your host IP (i.e.: 1)

For example, for Group 25, this will be:

fdba:dc55:48c7:0000:0000:0000:0025:0001/64  (LANs are 64 bit in IPv6)
|<- prefix ->||site||<----- LAN ------>|

Or, in short notation (consecutive 0's can be expressed as ::)

fdba:dc55:48c7::25:1 prefixlen 64 (LAN


1. On MASTER, edit /etc/rc.conf, and add

        ipv6_ifconfig_eth0="fdba:dc55:48c7::XX:YY/64"
        ipv6_enable="YES"

        Save the file & exit

2. Start IPv6:

        # /etc/rc.d/ip6addrctl start
        # /etc/rc.d/network_ipv6 start

3. Check your interface:

        # ifconfig eth0 inet6

        -> do you see an IPv6 address starting with fdba:... ?

4. Repeat steps 1 - 3 above for:

        - auth.grpX
        - slave.grpX

5. Check that the 3 hosts can ping each other:

        # ping6 fdba:dc55:48c7::XX:YY     (where XX = group number, YY = IP of host)

6. Can you ping the gateway ?

        # ping6 fdba:dc55:48c7::0000:254

7. What is another way to express:

        fdba:dc55:48c7::0000:254 ?



II. Auto configuration with RA/RS
---------------------------------

1. On MASTER, edit /etc/rc.conf, and add

        ipv6_enable="YES"
        ipv6_network_interfaces="eth0"

        # /etc/rc.d/network_ipv6 start
        # /etc/rc.d/ip6addrctl start

        NOTE: to manually enable accepting of RAs:

2. Just in case:

        # /etc/rc.d/auto_linklocal start
        # sysctl net.inet6.ip6.accept_rtadv=1

3. Force an IPv6 sollicitaion

        # rtsol -a

4. ifconfig eth0

        -> You should now see an additional IPv6 address starting with fdba:...