Comments on: Linksys WRT610N and IPv6

By: Anonymous

Anonymous — Sat, 24 Sep 2011 13:36:14 +0000

With the latest firmware, there is a firewall present for IPv6 too and it can be turned off by going to the hidden menu: http://ip_address_of_wrt610n/System.asp. IPv6 is called “Vista Premium” because back then it was the only “Certified for Windows Vista” router instead of the ordinary “Works with Windows Vista” certification.

By: ekrunch

ekrunch — Sun, 23 May 2010 16:39:05 +0000

tom :
did you run your WRT610n wireless ?coz I have hell of a time to set up wireless network on ubuntu 10.04 ,open suse, fedora and BT4 maybe this dual band router is to new) i need a driver to make it work

I doubt the router has anything to do with your Linux setup problems. I ran several Ubuntu laptops with wireless on this router. It's most likely your wireless card acting up or not being well supported by Ubuntu. I'd post in the Ubuntu support forums.

By: tom

tom — Sun, 23 May 2010 03:34:50 +0000

did you run your WRT610n wireless ?coz I have hell of a time to set up wireless network on ubuntu 10.04 ,open suse, fedora and BT4 maybe this dual band router is to new) i need a driver to make it work

By: Yuhong Bao

Yuhong Bao — Fri, 26 Jun 2009 23:36:20 +0000

“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.”
And most importantly, you will be ready when the 32-bit IPv4 address space is exhausted.

By: Phil P

Phil P — Sun, 22 Mar 2009 04:38:12 +0000

The 2002::/16 address used as the source address of the traceroute shows that this is a 6to4 address. If you have NAT for IPv4 then this means that the NAT box is setting up the 6to4 stuff, because 6to4 doesn’t work through NAT. If it were Teredo, the source address would be in 2001:0::/32 instead.

The problem without IPv4 will be a lack of DNS service — if you can find some IPv6-accessible open resolvers, or if the 610N has a DNS cache built in and accessible over IPv6, then you should be able to put this in manually. At the current time, Router Advertisements don’t support conveying DNS resolver information and DHCPv6 client support is scarce.

If you’re pinging an address only, remember to disable reverse DNS queries for the results.

So there’s no configuration option to set up a static tunnel and you’re stuck with 6to4? That’s a shame, but better than nothing.

By: ekrunch

ekrunch — Sat, 28 Feb 2009 19:26:19 +0000

Update : I disabled v4 on my Windows 7 Beta machine and it failed miserably. I could no longer ping any v6 addresses even if I forced IPv6 using the “-6″ option. I even restarted the adapter and rebooted the PC in hopes that it was just a side effect from me disabling it, but no. There is either a tunnel going in the WRT610N or the W7 machine just doesn’t know how to exist without v4. I need to try it on my Ubuntu box.

The WRVS4400N that I have in my lab works via tunnels so it wouldn’t surprise me if that’s how the WRT610N was doing it, although the WRVS4400N has the proper configuration options for it.

I’m going to apply that firmware update this afternoon and see what happens.

By: ekrunch

ekrunch — Sat, 28 Feb 2009 18:51:48 +0000

That is correct. Although i’m not sure what it’s doing and whether or not it’s doing any sort of 6to4. I may disable IPv4 on one of my machines and see if I can still get to any v4 sites. Right now i’m running a dual stack setup on all of my machines due to the lack of applications that support v6. If I could, i’d disable v4 on my local network.

I’d agree with you that this is not the correct approach because there is no way to configure/disable it. There’s a new firmware update out that says “- Resolved IPv6 and other security issues.” What that tells me is that it’s probably going to disable IPv6 altogether or at least add an option for it.

If anybody decides to buy one of these devices because of the IPv6 support, the firmware that i’m running is “1.00.00 B18″. Whether it is a mistake or not, it works.

By: Yrich

Yrich — Sat, 28 Feb 2009 06:10:10 +0000

So, just for clarification – there is nothing in the management interface for the router that lets you configure IPv6? It just configures the 6to4 prefix, sends out RAs to any listening devices, and knows the anycast IPv4 addresses for the 6to4 relays?

It is nice to see some vendors get on the IPv6 bandwagon – but this doesn’t really seem like the right approach…….

By: ekrunch

ekrunch — Mon, 09 Feb 2009 21:24:11 +0000

Normally i’d agree with you except for two things.

All of my XP boxes do it without the Ubuntu box being powered up.
I swapped it back to the WRT300N just for laughs and it breaks XP and Ubuntu’s v6 support.

And just for laughs, here’s the IPv6 traceroute from my XP box, the Ubuntu box is off right now.

C:\Documents and Settings\Ed>tracert6 ipv6.google.com

Tracing route to ipv6.l.google.com [2001:4860:0:2001::68]
from 2002:43af:1a87:0:f09c:5de5:5675:3289 over a maximum of 30 hops:

1 * * * Request timed out.
2 * * 133 ms 2002:82f4:31::1
3 161 ms 159 ms 161 ms 2a00:800:0:1::28:2
4 161 ms 160 ms 161 ms 2a00:800:0:1::43:1
5 158 ms 154 ms 155 ms pr61.ams04.net.google.com [2001:7f8:1::a501:5
169:1]
6 * * * Request timed out.
7 243 ms 244 ms 242 ms 2001:4860:0:2001::68

Trace complete.

By: Jonas

Jonas — Mon, 09 Feb 2009 21:17:26 +0000

I think what has happend is that your Ubuntu is running a torredo tunnel through the NAT FW. Check with ifconfig to see it you have sitX interface that are running IPv6OverIPv4 tunnel.