This blog post is part of a series on ipv6. In part 1, I provided an overview of ipv6 and looked at Teredo, the technology built into Windows Vista; in part 2, I looked at AYIYA tunnels through aiccu, using sixxs net as a tunnel broker. Part 2.5 is a collection of useful ipv6 tidbits, and part 3 describes gogonet/freenet6 tunnels.
In part 4, I will describe the IPv6 tunnel I have been using all along since 2008: A Hurricane Electric 6in4 tunnel, typically terminating on a router, though it could be terminated on a PC, as well. I aim to break part 4 into chunks, each describing setup for a different make and model of router.
Provisioning of the tunnel
Make sure the router you will be using allows itself to be pinged from either “the Internet”, or at the least from HE’s server, currently126.96.36.199.
Sign up with Hurricane’s Electric tunnelbroker.net service.
Once signed in, under “user functions”, choose “Create Regular Tunnel”.
Enter the IPv4 endpoint, and hit “Submit”. If you are a home user, your IPv4 endpoint is the public IP your ISP assigned to you, see whatismyip.org.
And you are done. Helpfully, the tunnel details page also allows you to get sample configurations for a variety of PC and router operating systems, including Linux, Windows, Cisco IOS, Juniper JunOS and Juniper ScreenOS.
Updating your dynamic IPv4 address
If you are in a home environment, your public IPv4 address may change from time to time. You can update it from the tunnel details page, or you can use tunnelbroker.net’s ipv4 update page that is intended to be used from a script, for automatic updates.
Routers supporting 6in4 tunnels
Whether enterprise class or home router, here are some of the devices that support 6to4 with 6in4 tunnels today (February 2010). On the home router side, it’s clear that it is early days yet. Comcast’s ipv6 trials may change the competitive landscape here.
Any SSG or ISG firewall running ScreenOS 6.0.0 or later, as well as (with some limitations) Netscreen firewalls on ScreenOS 5.4.0. Part 4.1 describes the setup.
Any JunOS router – J-Series, M-Series, E-Series, T-Series, &c. All the way back to JunOS 9.1 if need be.
Any SRX firewall, with the caveat that SRX does not yet support ipv6 firewalling as of JunOS 10.1, though it does support ipv6 tunneling and routing.
EX switches do not support ipv6 tunnels yet, though the feature is road-mapped.
It’s the usual mess of IOS versions depending on model, paired with feature set. A very Cisco-savvy fellow over at the HE forums has an excellent breakdown. In a nutshell, IOS 12.4 or later should work, and you’ll need the right feature set.
Switch support for IPv6 is good. You’ll need to check model / IOS version / feature set here, too.
Apple Airport Extreme supports 6to4, and a one-click tunnel provisioning, too. This is the only home router that I’d be confident to use for IPv6 today, without needing to fear that a firmware update would break IPv6. Mainly because a firmware update did break IPv6, and Apple fixed it in v1.5. For this router, IPv6 is an officially supported feature.
[Update 2010-04-28] Comcast will use this router in their IPv6 dual-stack trials, as one of three choices.
Comcast will use the Netgear WNR3500 and Netgear WNR1000 in their IPv6 dual-stack trials. Whether these routers support 6in4 tunnels is unknown to me at this point.
[Update 2011-08-03: D-Link have updated their site with a list of devices supporting native IPv6] According to D-Link, the following router models support IPv6. Comcast are using the DIR-655 and DIR-825 in their native dualstack IPv6 trial.
D-Link IPv6 Certified Routers
- DIR-601 Wireless N 150 Home Router (Hardware Revision A1)
- DIR-615 Wireless N 300 Router (Hardware Revision E1)
- DIR-632 Wireless N 8-Port Router (Hardware Revision A1)
- DIR-655 Xtreme N Gigabit Router (Hardware Revision B1)
- DIR-825 Xtreme N Dual Band Gigabit Router (Hardware Revision B1)
- DHP-1320 Wireless N PowerLine Router (Hardware Revision A1)
Other IPv6 Certified Products
- DHP-W306AV PowerLine AV Wireless N Extender (Hardware Revision A1)
- DAP-1350 Wireless N Pocket Router and Access Point (Hardware Revision A1)
- DAP-1360 Wireless N Range Extender (Hardware Revision B1)
- DAP-2590 AirPremier N Dual Band PoE Access Point
D-Link state that their DSL modem routers, the DSL-2540B and DSL-2640B also support IPv6.
D-Link DGS-3200 and DGS-3600 switches officially support IPv6.
WRT610N, with reports that firmware updates break ipv6 support and that Linksys support is firm that ipv6 is not an officially supported feature. More testing is in order here, too.
[Update] A Linksys live chat operator tells me that native IPv6 is supported on the WRT610N, and that there is no official documentation for this. No word on tunnels. I have reached out to their press office to get details and will update if/when I get an answer.
[Update] The Comcast trial forums float the WRVS4400N as supporting tunneled and native IPv6.
A “number of” their wireless products support ipv6. I have reached out to their press office to get details and will update if/when I get an answer.
FRITZ!Box 7270 (experimental “Labor” version)
I have reached out to their press office to get details and will update if/when I get an answer.