Categories: Network

Setting up IPv6 network via TM Unifi on CentOS 5

Well, at the time of this writing .. TM Unifi has not yet provide ready-made IPv6 for us.
(probably hidden under some test-bed environment only i.e MYREN network)

Anyway, if you are eager to get hook onto IPv6 now, the choice are either getting a tunnel
IPv6-over-IPv4 .. which is provided by quite a number of provider :
namely :

1. http://gogo6.com (http://freenet6.net)
2. http://www.sixxs.net
3. Hurricane Electric (http://www.tunnelbroker.net)

well, each of them got their own tunnel provided and step.
Tried Gogoc on CentOS, work like charm.. except sometime ..
I had ..
“Failed to TSP.. bla bla”

For sixxs.net , the registration took longer than the others..
so, I just jump to next one.. he.net

After registered, login, create regular tunnel.. wait few moment..
It assigned a ::0/64 for me. . and the script provided for linux too.

copy & paste that script into the router box .. and it just work !

I choose the “Linux-net tools”

ifconfig sit0 up
ifconfig sit0 inet6 tunnel ::
ifconfig sit1 up
ifconfig sit1 inet6 add 2001:470:3x:1xx::2/64
route -A inet6 add ::/0 dev sit1

well.. then it also routed /64 and /48 such as the following :

Routed IPv6 Prefixes and rDNS Delegations
 Routed /48:  2001:470:xx43::/48
 Routed /64:  2001:470:3y:1xx::/64

then, to route the IPv6 to the whole network behind me ..

I just .. adding the routed network (/64) into my internal LAN interface.

ip addr add 2001:470:3y:1xx::1 dev eth0

Ok, now time to get the Forwarding to works.

echo "1" > /proc/sys/net/ipv6/conf/all/forwarding

or made it permanently .. by adding the following line into /etc/sysctl.conf

# IPv6

then install the radvad .. (some said it is kind of DHCP server for IPv6 )

yum install radvd -y

then configure the radvd to advertise the IPv6 internally..

something like the following :

interface eth0 { 
        AdvSendAdvert on;
        MinRtrAdvInterval 3; 
        MaxRtrAdvInterval 10;
        prefix 2001:470:3y:1xx::/64 { 
                AdvOnLink on; 
                AdvAutonomous on; 
                AdvRouterAddr on; 

        route 2001:470:xx43::/48
                AdvRoutePreference high;
                AdvRouteLifetime 3600;

chmod a-w /etc/radvd.conf
service radvd start

then try monitoring it for few moment..


it should had something like the following..

verifying using the following command :

ip -6 route show

then clients .. such as nexus one, htc wildfire will pickup the IPv6 automatically..
as this box also had DHCP server running for IPv4.

and it would just worked !

so.. now ..
http://ipv6.namran.net is alive.. (only reachable via IPv6 infra as it set to listening to ipv6 interface only) yay !

Credit goes to .sha..

and following reference :

1. http://www.tunnelbroker.net/forums/index.php?topic=1442.0

Namran Hussin: a soft spoken guy... with exceptional interest in computers and technology. I love to learn new thing and also love to break thing for the sake of learning.. but I do abide to the self-imposed limitation or certain thing such as social thing in life, thing can be done and thing that must be avoided at whatever cost such as drug,illegal tracking, smoke,illicit activity..etc.muahahaha let's share what we had in this short term of the life.! make it worth of the living.~

View Comments (2)

  • Hi,
    well, I 'm a newbie to ipv6(and many other things).
    I'm a unifi subscriber VIP5.
    I'd like to set up a home network comprising a laptop and a pc, to be able to ping each other and outside world using IPv6.
    At the first step, I want to be able to ping ipv6.google.com
    currenly I'm running ubuntu on my laptop.
    I followed your instruction to register with he.net and got the same script. however I don't know what you mean by copy& pasting it into "your router box"? can you help me? Thanx

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