Here are some pages on which you can get information about IPv6:

• http://en.wikipedia.org/wiki/IPv6
• http://www.olympus-zone.net/page_1033_en_Blue.html

For our facilities, we have the following /32 Netz: 2001:41D0::/32

For the routing we use Cisco routers 6k (6509 SUP720 card with the native IPv6 packets to route).

Every customer with a dedicated server at OVH has a fixed IPv4, one or more IpFailover and 18,446,744,073,709,551,616 IPv6 addresses (ie a /64) are attached to the IPv4 server.

So you can with a dedicated server:

• Use multiple SSL certificates
• Several anonymous FTP operations
• Web-hosting service run (IP-based)
• A public VPN set up based on the dedicated server
• Etc. ..

• The server must be running with a IPv6 kernel. This kernel is available by netboot Netboot
• Find your own IPv6 address in manager v3 Manager

An IPv4:

IPv6 will be the following:


Here are examples from which you can configure IPv6 on your dedicated server:


The following notations are the same:

But you can :: place only once.



Once you've switched the server to IPv6 kernel, after the reboot ifconfig already has IPv6 info:

This shows that IPv6 works on the network.



The router (default gateway) for each IPv6 is always on IP: v:6:FF:FF:FF:FF:FF

For example:

The IPv6 server: 2001:41D0:1:46e::/64 to 2001:41D0:1:4 + 5x FF.
IPv6 Gateway: 2001:41D0:1:4FF:FF:FF:FF:FF

The IPv6 server: 2001:41d0:1:209::/64 to 2001:41d0:1:2 + 5x FF.
IPv6 Gateway: 2001:41d0:1:2FF:FF:FF:FF:FF


To be used for all Linux distributions in the examples below, the server has IPv6, the IPv6 kernel and it is has the address from the manager. A uname-a indicates that an IPv6 kernel, and the command shows us that ifconfig The Router IPv6 already have a local link.


The dedicated server we are running configure with the IPv4: 213.186.35.9/24, this will lead to the following IPv6: 2001:41d0:1:209::/64.
The following examples are identical for Redhat 7.2, Fedora and CentOS. You can therefore also use it for OVH Release Plesk, (based on CentOS).



We do 2001:41D0:1:209::1/64 and 2001:41D0:1:209::5/64 Add to eth0 :


So IPv6 does not disappear at the next reboot it must be added in the configuration file of the eth0 interface. We will create a copy of the file and then edit it:

Here are the contents of the file after the change. The red options were added:


All of the following IPv6 must be located in the line IPV6ADDR_SECONDARIES
It has the file /etc/sysconfig/network edited this line and add NETWORKING_IPV6=yes

It must be restarted with /etc/init.d/network restart
Note: It is possible that Redhat displays an error: "modprobe: Can not open dependencies file ..." You can ignore this, it does not affect the result.

ifconfig ?


You may be able to ping the gateway but can not use your ipv6, in this case add a default route:



For example:





The dedicated server we are running configure with the IPv4: 213.186.35.9/24, this will lead to the following IPv6: 2001:41d0:1:209::/64.
You need to get your IPv6 address in your manager and boot with a IPv6 kernel. The command ifconfig shows us that the router already have a local IPv6 link.

You must edit the file /etc/conf.d/net and simply add the IPv6 in () of interface eth0. Here are the contents of the file after the addition of IPv6. The changes are marked in red:

We start the new interface:

ifconfig ?


You may be able to ping the gateway but can not use your ipv6, in this case add a default route:



For example:





The dedicated server we are running configure with the IPv4: 213.186.35.9/24, this will lead to the following IPv6: 2001:41d0:1:209::/64.
You need to get your IPv6 address in your manager and boot with a IPv6 kernel. The command ifconfig shows us that the router already have a local IPv6 link.

It then has to file: /etc/network/interfaces be edited, then simply add the IPv6:

For each additional IPv6 adddress the following must be added to the end of the file:

And next to it:


ifconfig ?


You may be able to ping the gateway but can not use your ipv6, in this case add a default route:



For example:





The dedicated server we are running configure with the IPv4: 213.186.35.9/24, this will lead to the following IPv6: 2001:41d0:1:209::/64. You need to get your IPv6 address in your manager and boot with a IPv6 kernel.
In this example, here is the r10 network interface. It is also possible that the interface in the ifconfig is registered as Vr0. In this case, you replace all r10 by Vr0.

We will begin with the following lines in /etc/sysctl.conf add:

And reboot:

To activate the "router advertisement" option. Afterwards it's enough to add the IPv6 address manually:

to obtain the information for "default_route". The requested information is marked in red:

All information for the configuration of /etc/rc.conf are here. So we will insert the following lines below in the file:

Each additional IPv6 is added as pv6_ifconfig_rl0_aliasX =.
We start again:


ifconfig ?



You need to login in by TSE (Remote Desktop Connection) to connect to the server and then as follows:

Once on this page, you execute:

Then:

To enter this command:

Verification

Ping6 Test

We ping6 to the router:

Traceroute6 Test

Do traceroute6 to IPv6 DNS Servers by Afnic:

It is working.
There are websites that can offer a traceroute6 ping6 or tests online. You can use these function to check with the added IPs.