Native connection ADSL in IPv6
Nerim is the first ISP in France to place at the disposal of its subscribers an access ADSL in IPv6.
List of elements to be gotten :
- To have a Nerim subscription with address IP(v4) fixed.
- The machine connected to the ADSL must support connections PPP in IPv6.
A router under GNU/Linux or FreeBSD or a material router (Cisco or 6Wind for example)
can agree. A machine under Windows is not compatible, the routeurs/modem provided by
Nerim in its packs either (except if they are configured out of simple modem).
- An IPv6 Bloc
- The block of IP allocated with the tunnel is not the same one as that that you will have as a native, it is necessary thus new for you
- the form should be used to know your new block below
- For reverses DNS it is necessary to make the request of it with firstname.lastname@example.org
Form of attribution of the IPv6 block /48
Lastly, it is necessary to configure your IPv6. As for the moment there is no stable protocol
automatically to parameterize the /48 of the customer, it is necessary for you to know your IP.
With this intention, indicate in this box your fixed IPv4 address. If you have a block of IP, give
the external address of the router, that which does not form part of the block.
Your block of IPv6 will be :
It should first of all be configured its router so that it negotiates connection in IPv6.
If connection occurs well, you will have on interface PPP IPv6 an address known as
"link local", who resembles something like that : fe80::545c:ba9b:1c8c:ef/10.
(Warning : FreeBSD before to 4.7 dregs a address local bond on the interfaces
tunX by defect but does not support therefore IPv6 via PPP)
If you arrive at this point, you are on the good way.
- FreeBSD 4.7 and later
- the route in /etc/ppp/ppp.conf :
add default HISADDR6
- NetBSD (tested by Manuel Bouyer)
- It is necessary on the one hand to check that pppd is compiled with the IPv6 support and to add the following
line in the file of configuration PPP /etc/ppp/options :
(The comma must be present). This is valid for all the Linux distributions
route add -A inet6 default ppp0
- NOT USAGI
route add -A inet6 ::/0 ppp0
ip -f inet6 route add 2000::/3 dev ppp0 metric 1
- (in the dialer)
no ipv6 nd suppress-ra
ipv6 route ::/0 dialer 0
For the other routers material, to refer to their documentation and information of this paragraph.
Following stage (to configure the addresses of the /48) :
To configure as IPv4 it is has to say a address on the router and the others on machines of the LAN
(don't forget to put the route by default in inet6 towards PPP interface)
a small "traceroute6 www.ipng.nl" to make sure it's working well
- Example for a manual configuration without reboot :
sysctl -w net.inet6.ip6.forwarding=1
ifconfig xl0 inet6 2001:7a8:2039:1:: anycast
- In /etc/rc.conf here for 2 interfaces LAN (the file rtadvd.conf will be empty)
ipv6_gateway_enable="YES" # If one wants forward packets.
ipv6_prefix_xl0="(PREFIX1)" # Ex: 2001:7a8:2039:1
To make sure that PPP supports IPV6CP (BSD)
the logs should be consulted :
if you see "unkown protocol :0x8057" it is that your PPP does not support ipv6 it thus should be updated
if you see a message like "unkown ipv6cp" this is the same : ipv6 is not supported
if you see "Phase: deflink: IPV6CP protocol reject closes IPV6CP !" this is OK
I pass on the upgrade of PPP which differe according to OS (use ppp under FreeBSD and not pppd)
OS List functional or not :
|OS|| IPV6CP (Point to Point Protocol)|
| || |
| || |
| || |
Connection by tunnel
If Nerim cannot provide you native IPv6 connection, there remains the possibility
of configuring a tunnel. With this intention, send a mall to
email@example.com by specifying your name, your
login ADSL and IPv4 or it is necessary to provide the tunnel. Under 8 days, you
will receive the parameters of the tunnel.
Remarks on this page
For all remarks or suggestion, write Jean Théry.