IPv6 Tunneling Service
IIJ assigns IPv6 addresses and provides connectivity to the IPv6 network by means of "IPv6-over-IPv4 tunneling"(*1) to customers of "IIJ Internet Access Service," "IIJ DSL/F Service," "IIJ DSL/A Service," "IIJ FiberAccess/F Service", "IIJmio DSL/SF Service", and "IIJmio FiberAccess/SF Service"
- (*1) IPv6-over-IPv4 tunneling: Encapsulates an IPv6 packet in an IPv4 packet and then sends it via the IPv4 network.
Features
- Connectivity by IPv6 over IPv4 tunneling
- IIJ provides connectivity to the IPv6 network on existing IPv4 lines by means of IPv6 over IPv4 tunneling(*1).
- Allocating /48 Address Space
- IIJ will assign you /48 address space (equivalent to 65,536 subnets, containing 264 addresses in each subnet) from our sub-TLA (sTLA) address space allocated by APNIC. This abundance of addresses allows you to flexibly design your network.
- You can easily experience IPv6
- You will need to prepare and set up your own IPv6 tunneling router.
How It Works

Fees
Please contact us for details. There are no charges for this service.
- Note: However, each of the following services does require payment of charges: Internet Access Service, IIJ DSL/F Service, IIJ DSL/A Service, IIJ FiberAccess/F Service, IIJmio DSL/SF Service, and IIJmio FiberAccess/SF Service.
Necessary Equipment
- Global IPv4 addresses for the setup of IPv6-over-IPv4 tunneling
- Router or host that is set up for IPv6-over-IPv4 tunneling
- Customers need to set up the DNS for IPv6 addresses
* Please see our FAQ for further information.
From Application to Inception of Service
Please fill in the IPv6 Tunneling Service application form(*2) and send it back to IIJ. After finishing the necessary setup at IIJ, we will send you a"Notification of Configuration Information". If you are already an IIJ's access service customer, it will take a week or two before you can start using the Trial Service. If you are applying for IIJ's access service for the first time, the Trial Service will normally start at same time as the access service does.
- (*2) Please send an email to info@iij.ad.jp to obtain the application form.
Terms of Use
- Terms of use for IPv6 Tunneling Service (Japanese Text Only)
For Further Information
For more details on this service or an application form, please send an email to info@iij.ad.jp.

