Configuring IPv6 Over IPv4 Tunnels

This section describes how you configure IPv6 over IPv4 tunnels.

For conceptual descriptions of tunnels, see "Solaris Tunneling Interfaces for IPv6" and "Tunneling Mechanism".

How to Configure IPv6 Over IPv4 Tunnels

1. Become superuser.

2. Create the file /etc/hostname6.ip.tunn. Use the values 0, 1, 2, and so on, for n. Then add entries following these steps.

   1. Add the tunnel source addresses. Then add the tunnel destination addresses.

      tsrc IPv4-source-addr tdst IPv4-destination-addr up

   2. (Optional) Add a logical interface for the source and destination IPv6 addresses.

      addif IPv6-source-address IPv6-destination-address up

      Omit this step if you want the address autoconfigured for this interface. You do not need to configure link-local addresses for your tunnel. Link-local addresses are configured automatically.

When you finish configuring the tunnels, you must reboot.

Note - You must perform the same steps at the other end of the tunnel for bidirectional communication to occur.

If your system is to be configured as a router, you must also configure your router to advertise over tunneling interfaces before rebooting. See "How to Configure Your Router to Advertise Over Tunneling Interfaces".

Example--Entry for IPv6 Configuration File to Autoconfigure IPv6 Addresses

This example shows a tunnel for which all IPv6 addresses are autoconfigured.

tsrc 129.146.86.138 tdst 192.168.7.19 up

Example--Entry in the IPv6 Configuration File for Manually Configured Addresses

This example shows a tunnel for which global source and global destination addresses are manually configured. The site-local source and site-local destination addresses are also manually configured.

tsrc 120.46.86.138 tdst 190.68.7.19 up
addif fec0::1234:a00:fe12:528 fec0::5678:a00:20ff:fe12:1234 up
addif 2::1234:a00:fe12:528 2::5678:a00:20ff:fe12:1234 up

How to Configure Your Router to Advertise Over Tunneling Interfaces

Following these steps for each tunnel.

1. Become superuser.

2. Edit the /etc/inet/ndpd.conf file. Add entries by using the following steps.

   1. Enable router advertisement over the tunneling interface.

      if ip.tunn AdvSendAdvertisements 1

   2. Add prefixes as needed.

      prefix interface-address ip.tunn

3. Reboot.

Displaying IPv6 Name Service Information

This section provides procedures to display IPv6 name service information.

Displaying IPv6 Name Service Information Task Map

Table 15-3 Displaying IPv6 Name Service Information Task Map

How to Display IPv6 Name Service Information

In this procedure, you use the nslookup command to display IPv6 name service information.

1. On the command line, type the following command:

   % /usr/sbin/nslookup

   The default server name and address appear, followed by the nslookup command angle bracket prompt.

2. To see information about a particular host, type the following commands at the angle bracket prompt:

   >set q=any >host-name

3. To see only AAAA records, type the following command at the angle bracket prompt:

   >set q=AAAA

4. Quit the command by typing exit.

Example--Using nslookup to Display IPv6 Information

%  /usr/sbin/nslookup
Default Server:  space1999.Eng.apex.COM
Address:  120.46.168.78
> set q=any
> vallejo
Server:  space1999.Eng.apex.COM
Address:  120.46.168.78

vallejo.ipv6.eng.apex.com      IPv6 address = fec0::9256:a00:fe12:528
vallejo.ipv6.eng.apex.com      IPv6 address = 2::9256:a00:fe12:528
> exit

How to Verify That DNS IPv6 PTR Records Are Updated Correctly

In this procedure, you use the nslookup command to display PTR records for DNS IPv6.

1. On the command line, type the following command:

   % /usr/sbin/nslookup

   The default server name and address display, followed by the nslookup command angle bracket prompt.

2. To see the PTR records, type the following command at the angle bracket prompt:

   >set q=PTR

3. Quit the command by typing exit.

Example--Using nslook to Display PTR Records

%  /usr/sbin/nslookup
Default Server:  space1999.Eng.apex.COM
Address:  120.46.168.78
> set q=PTR
> 8.2.5.0.2.1.e.f.f.f.0.2.0.0.a.0.6.5.2.9.0.0.0.0.0.0.0.0.2.0.0.0.ip6.int

8.2.5.0.2.1.e.f.f.f.0.2.0.0.a.0.6.5.2.9.0.0.0.0.0.0.0.0.2.0.0.0.ip6.int name = 
vallejo.ipv6.Eng.apex.COM
ip6.int nameserver = space1999.Eng.apex.COM
> exit