Posts Tagged IPv6
Linksys E4200 and IPv6
Posted by ekrunch in Personal, Rants, Technology, Useful Information on June 27, 2011
On June 14th, 2011, Linksys released firmware update 1.0.02 (Build 13) for hardware version 1.0 of the Linksys E4200. This firmware contains the long awaited implementation of IPv6 for the E4200!
The good news is, it works! The bad news is, not with Comcast apparently. More on that later. First things first, here’s a screenshot of my current setup.
Linksys E4200 IPv6 Configuration Dialog
The first thing you’ll notice is that I had to disable the Automatic mode. That’s the “doesn’t work with Comcast” part. I put it in place, rebooted it a few times, released and renewed my IP, nothing. It could be my modem, but I doubt it. I’m using a DOCSIS 3.0 compliant surfboard which should be IPv6 compliant. Maybe it’s Comcast, but who knows?
In order to get this working, flip the “IPv6 – Automatic” toggle to Disabled, then put the “6rd Tunnel” to Manual Configuration. (The “Automatic Configuration” of the 6rd Tunnel didn’t work either.) Once you’re in Manual mode, you can head on over to tunnelbroker.net and create yourself a login and a new tunnel. (Note : You’ll have to enable ping in order for Tunnel Broker to work. Go to Security -> Firewall and clear the check box next to “Filter Anonymous Internet Requests“. This will allow ICMP requests to come through and Tunnel Broker will allow you to create a tunnel.) Once you have the tunnel created, enter the “Server IPv4 Address” from tunnel broker into the “Border Relay” field on the E4200. Now enter the “Routed /64” from tunnel broker into the “Prefix” on the E4200. (Note : You need to get rid of the “::/64″ off of the end of the field that tunnel broker gives you.) Put “64” into the Prefix Length and “32” into the IPv4 Address Mask and Save Settings.
Head over to Status -> Router and at the very bottom, you should see “Tunnel Status: Connected“. If you don’t, hit the Connect button. One thing, I did have to release and renew my IPv4 address for some reason. Probably because I was fiddling with all of the tunnel configurations, trying to get this thing to work.
Good luck and if anyone has any luck connecting to Comcast in Automatic mode, let me know. I’d love to go native instead of tunneling!
Linksys WRT610N and IPv6
Posted by ekrunch in Personal, Rants, Technology, Useful Information on February 2, 2009
Thanks to the shoddy job that Linksys did with the WRT300N, I grudgingly purchased a new Linksys WRT610N. What a pleasant surprise! Finally another decent product from Linksys. Not that i’ve ever expected much from the bargain networking gear, but the WRT300N was very, very bad. Several of the features didn’t work consistently, new firmware was no where in sight, and the 802.11n was abysmal. The WRT300N made me regret ever upgrading from the WRT54GS, which was one of the best routers on the market and still is in the 802.11g game.
Fortunately the new WRT610N solves most of those problems. The simultaneous 2.4/5ghz radios make life really nice and performance is good. I’m now able to run all of my 802.11n gear on 5ghz while 802.11g stays on 2.4ghz. Each radio can also be restricted accordingly. Very handy. Well done Linksys. The updated features of the firmware are always welcome as well. More granular control over the system for those who need it definitely helps. And then there are those surprise features that we get from time to time.
I’ve recently started running IPv6 on my home network for the enhanced features that are offered. Things that were extensions in v4 are part of the standard in v6 and can make life nice, especially in high throughput situations. Imagine my surprise when I was updating my Ubuntu box and noticed that the WINE mirrors’ IP address was a v6 one! So apparently, the WRT610N does IPv6, it just doesn’t tell you! This is some scary stuff folks, imagine that modern operating systems come with IPv6 enabled and people go and buy this router, not knowing that their doors are now open via a whole new protocol. Granted, most home users will never know, but I seriously wonder if the firewall in the 610N has v6 support.
Let’s hope that Linksys is one step ahead of us here or a lot of users are about to get their horizons broadened when the hackers start coming in via IPv6. 
For those who are unfamiliar with IPv6 and would like to know more, Ars Technica has a nice primer. Read more here.
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