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IPv6 Configuration/Troubleshooting with DD-WRT
![[us]](/s/countries/us.gif) Shadow Hawkins on Sunday, 28 February 2010 15:28:28
Hello,
I would appreciate some help/advice. With recent builds of DD-WRT (currently on 13972 of v24) I can't seem to route IPv6 traffic to/from computers on my network. I haven't changed my tunnel or radvd settings and computers on the network are getting an appropriate IPv6 address.
To aid in my testing I'm trying to localize the issue. I can, using http://www.berkom.blazing.de/tools/ping.cgi ping my POP IPv6 (usdal01 - 2001:1938:80:17::1) but I cannot ping my IPv6 ... and of course I cannot ping any computer on my network. I find this strange since SixXX can and does ping my router and it responds (I'm using a static IP tunnel).
I would appreciate if someone could give me some pointers on how to better localize my problem I would appreciate it. Digging through the DD-WRT forums it appears that my tunnel and radvd settings are all correct and in the past it has worked fine.
Regards,
SMF
IPv6 Configuration/Troubleshooting with DD-WRT
As a DD-WRT is just another Linux edition, login to the thing (using SSH or telnet *shudder*) and then provide the details that are requested in that really big orange box. Without those details, not many people will be able to help you, unless they are psychic or able to hack into your box without them even knowing which box is yours...
Also, you might want to see Traceroute in the tools section of SixXS as that allows you to traceroute from every PoP in the SixXS network, including the PoP you are connected from.
IPv6 Configuration/Troubleshooting with DD-WRT
Shadow Hawkins on Monday, 01 March 2010 03:28:25
Jeroen,
Thank you for your reply. I apologize as I'm a Linux neophyte but yes I can telnet into my router ;). Though I have to confess as to missing your reference to the big orange box. I assume it tells me the info I should supply to help others help me.
I used the traceroute tools and can reach a PC on my network from some pops but not all.
Sorry for being new at this but I do appreciate any pointers on where to look and learn.
Regards,
SMF
IPv6 Configuration/Troubleshooting with DD-WRT
The big orange box, visible when posting, points to the "Reporting Problems" list on the contact page.
As for your "it works for some not others", you could at least paste which ones do and which ones don't work.
IPv6 Configuration/Troubleshooting with DD-WRT
Shadow Hawkins on Wednesday, 03 March 2010 16:41:31
I tried to do this with OpenWRT on a Linksys WRT54G and failed, I think because of a limitation in the 2.4 Linux kernel necessary for Broadcom wireless support. This was some time ago, however. I don't know if things have changed, like if Broadcom wireless is working on 2.6 kernels.
Here's a thread detailing the problem:
https://forum.openwrt.org/viewtopic.php?pid=102846#p102846
Notice that even with everything setup correctly,
ping6 -s 190 www.sixxs.net
would work, but
ping6 -s 191 www.sixxs.net
would not.
Iow, it was 'routing' IPv6, but only for very small packets, which made it look like it wasn't routing at all.
IPv6 Configuration/Troubleshooting with DD-WRT
root@sheol:~# uname -a
Linux sheol 2.4.35 #472 Fri Apr 11 15:38:11 CEST 2008 mips unknown
/etc/motd claims "DD-WRT v24"
and this thing runs & routes IPv6 just fine, using aiccu + AYIYA. Small and large packets, well everything MTU=1280 as that is the MTU of that specific tunnel, which works great for HTTP/IMAP etc.
Only thing is that when it reboots it doesn't properly run the scripts to start aiccu and it is actually in heavy need of an upgrade, but as it is properly firewalled away and in a rather remote location which I can't reach easily I haven't done that yet.
I have much better success with OpenWRT btw, and the moment I come close to that box, that is that I have physical access to properly upgrade it, then I'll definitely throw OpenWRT onto it.
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![[ch]](/s/countries/ch.gif)
on Sunday, 28 February 2010 16:50:24
Posting is only allowed when you are