[SOLVED] Problems getting IPv6 working on EA2700 Router

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PatrickDickey52761
DD-WRT Novice


Joined: 16 May 2015
Posts: 8
PostPosted: Fri May 29, 2015 14:19    Post subject: [SOLVED] Problems getting IPv6 working on EA2700 Router Reply with quote
Hi everyone,

I've tried quite a few things, but nothing seems to work here. My IPv6 is provided by HE.net (Tunnelbroker), and is a /64. Right now I have it set up so that everyone *should* be getting an IPv6 address from tunnelbroker. My computer(s) have IPv6 addresses inside of my range (I believe), but my router has WAN IPv4: 67.7.24.201 IPv6: ::67.7.24.201 instead.

Here is what my computer shows in ipconfig
Code:

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : local.lan
   IPv6 Address. . . . . . . . . . . : 2001:470:1f11:830:5930:27ad:4a1b:84df
   Temporary IPv6 Address. . . . . . : 2001:470:1f11:830:a57b:613f:b970:7c49
   Link-local IPv6 Address . . . . . : fe80::5930:27ad:4a1b:84df%4
   IPv4 Address. . . . . . . . . . . : 192.168.2.118
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : fe80::b675:eff:fe40:1e06%4
                                       192.168.2.1


My Router and firmware information is:

Code:


Router Model
 Linksys EA2700

Firmware Version
 DD-WRT v24-sp2 (01/20/15) giga - build 25974M

Kernel Version
 Linux 3.10.65 #5875 Tue Jan 20 07:43:03 CET 2015 mips
 



Attached is a screenshot of how I have the IPv6 sub-tab under Setup configured. I do have radvd and radvd custom enabled, although they don't show up in the screenshot.

Here is the contents of my radvd.conf file from the IPv6 sub-tab:

Code:

 interface br0 {
 MinRtrAdvInterval 3;
 MaxRtrAdvInterval 10;
 AdvLinkMTU 1480;
 AdvSendAdvert on;
 prefix 2001:470:1f11:830::/64 {
 AdvOnLink on;
 AdvAutonomous on;
 AdvValidLifetime 86400;
 AdvPreferredLifetime 86400;
 };
 RDNSS 2001:470:20::2 {};
 };


One thing I've noticed is that my computer gets a 2001:470:1f11... address, while my router is supposed to get one that has 2001:470:1f10... in it. In the past, I believe all of my computers and devices had 1f10 in theirs.

I should note that I've tried this with nothing in the IPv6 screenshot, and just recently put something there. With nothing in the screenshot, I don't have any IPv6 address listed in the upper right hand corner.

Here's my startup config and firewall config from Administration -> Commands:

Code:

Startup
-----------------------------------
nvram set partialboots=0
nvram commit

#Hurricane Electric Tunnel Configuration
# Combination of various scripts

sleep 10
insmod ipv6
sleep 30
modprobe ipv6
ip tunnel add he-ipv6 mode sit remote 184.105.253.14 ttl 255
ip link set he-ipv6 up
ip addr add 2001:470:1f10:830::2/64 dev he-ipv6
ip route add ::/0 dev he-ipv6
ip -f inet6 addr
ip addr add 2001:470:1f11:830::/64 dev br0
sleep 5
radvd -C /tmp/radvd.conf

================================================
Firewall
-------------------

iptables -I INPUT 2 -s 66.220.2.74 -p icmp -j ACCEPT

*The === and --- are just added here to separate everything out.

And finally, here's the results of ifconfig after telneting into the router.

Code:

root@DICKEY:~# ifconfig
br0       Link encap:Ethernet  HWaddr B4:75:0E:40:1E:06
          inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::b675:eff:fe40:1e06/64 Scope:Link
          inet6 addr: 2001:470:1f11:830::/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:347216 errors:0 dropped:9 overruns:0 frame:0
          TX packets:310550 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:25997402 (24.7 MiB)  TX bytes:333346620 (317.9 MiB)

br0:0     Link encap:Ethernet  HWaddr B4:75:0E:40:1E:06
          inet addr:169.254.255.1  Bcast:169.254.255.255  Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth0      Link encap:Ethernet  HWaddr B4:75:0E:40:1E:06
          inet6 addr: fe80::b675:eff:fe40:1e06/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:27256513 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22087414 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:20562357 (19.6 MiB)  TX bytes:3707077007 (3.4 GiB)
          Interrupt:4 Base address:0x2000

eth1      Link encap:Ethernet  HWaddr B4:75:0E:40:1E:08
          inet6 addr: fe80::b675:eff:fe40:1e08/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10868425 errors:0 dropped:0 overruns:0 frame:36820789
          TX packets:16138977 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1185227846 (1.1 GiB)  TX bytes:1864117729 (1.7 GiB)
          Interrupt:3 Base address:0x1000

he-ipv6   Link encap:IPv6-in-IPv4
          inet6 addr: fe80::a00:1/64 Scope:Link
          inet6 addr: fe80::4307:16ec/64 Scope:Link
          inet6 addr: 2001:470:1f10:830::2/64 Scope:Global
          inet6 addr: fe80::a9fe:ff01/64 Scope:Link
          inet6 addr: fe80::c0a8:201/64 Scope:Link
          UP POINTOPOINT RUNNING NOARP  MTU:1447  Metric:1
          RX packets:949 errors:0 dropped:0 overruns:0 frame:0
          TX packets:901 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:97167 (94.8 KiB)  TX bytes:93752 (91.5 KiB)

ip6tun    Link encap:IPv6-in-IPv4
          inet6 addr: ::67.7.24.201/128 Scope:Compat
          UP RUNNING NOARP  MTU:1447  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:2539 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MULTICAST  MTU:65536  Metric:1
          RX packets:450 errors:0 dropped:0 overruns:0 frame:0
          TX packets:450 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:31455 (30.7 KiB)  TX bytes:31455 (30.7 KiB)

ppp0      Link encap:Point-to-Point Protocol
          inet addr:67.7.24.201  P-t-P:65.103.57.201  Mask:255.255.255.255
          UP POINTOPOINT RUNNING MULTICAST  MTU:1467  Metric:1
          RX packets:285642 errors:0 dropped:0 overruns:0 frame:0
          TX packets:304373 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:320148725 (305.3 MiB)  TX bytes:20498444 (19.5 MiB)

vlan1     Link encap:Ethernet  HWaddr B4:75:0E:40:1E:06
          inet6 addr: fe80::b675:eff:fe40:1e06/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14610994 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10664852 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11991965405 (11.1 GiB)  TX bytes:6605854859 (6.1 GiB)

vlan2     Link encap:Ethernet  HWaddr B4:75:0E:40:1E:07
          inet6 addr: fe80::b675:eff:fe40:1e07/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:12645519 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11422556 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:13198757442 (12.2 GiB)  TX bytes:1307839224 (1.2 GiB)

wl0.1     Link encap:Ethernet  HWaddr B6:75:0E:40:1E:09
          inet addr:10.0.0.1  Bcast:10.255.255.255  Mask:255.0.0.0
          inet6 addr: fe80::b475:eff:fe40:1e09/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:301 errors:0 dropped:0 overruns:0 frame:36820789
          TX packets:2199 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:71698 (70.0 KiB)  TX bytes:781678 (763.3 KiB)


So, I'm totally lost here. I checked my tunnel details, and it's being updated (presumably by the router, although I do have an updater script on one of my computers). But when I check at http://www.whatismyipv6.com, it shows my IPv4 address. And I'm unable to ping or access IPv6 only sites.

Is it a matter of having dd-wrt handle dhcp6? Or is it something else? Currently, I have a raspberry pi handling my dhcp for IPv4. I could always set it up to do dhcp6 also (or set the router up to do that). If I can import (or migrate) my dnsmasq configurations from the raspberry pi to the router, I'd gladly do that.

Thanks for any help you can provide me with. I greatly appreciate it.

Have a great day.Smile
Patrick.

P.S. If there's anything more that you need, I'll gladly provide it.

DD-WRT-IPv6-Setup.JPG
 Description:
IPv6 configuration
 Filesize:  53.83 KB
 Viewed:  7182 Time(s)

DD-WRT-IPv6-Setup.JPG


Last edited by PatrickDickey52761 on Sat May 30, 2015 14:33; edited 1 time in total
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JAMESMTL
DD-WRT Guru


Joined: 13 Mar 2014
Posts: 856
Location: Montreal, QC
PostPosted: Fri May 29, 2015 19:01    Post subject: Reply with quote
see http://www.dd-wrt.com/phpBB2/viewtopic.php?p=909299#909299
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PatrickDickey52761
DD-WRT Novice


Joined: 16 May 2015
Posts: 8
PostPosted: Fri May 29, 2015 21:00    Post subject: Reply with quote
JAMESMTL wrote:
see http://www.dd-wrt.com/phpBB2/viewtopic.php?p=909299#909299


Thanks for the reply (and the knock upside the head Wink ). I used your thread, but was tired at the time apparently, because I didn't see my screen like yours or something. LOL

Two quick questions though. Do I need anything in the radvd.conf below all of this? And do I need anything in my startup besides the nvram lines (which are meant to keep it from flashing back to the Linksys firmware, if I understand correctly)?

------------ Update ---------------------

I made the changes as per your post. Then I removed the customized radvd.conf information, and the startup commands. Applied my settings. Now, in the upper right hand corner, it shows WAN IPv4: 67.7.22.15 IPv6: 2001:470:1f10:830::2, but when I go to www.whatismyipv6.com or www.test-ipv6.com, it still only shows my IPv4 information (and fails all of the tests). I did an ipconfig /renew on my computer, and it still has the 2001:470:1f11:... address (instead of the 1f10 address).

So, I'm closer, but not quite there. Now my question is, do I need to reboot everything? Also, do I need to disable radvd and radvd custom?

Thanks again. If this works, I owe you a beer or two at least. Smile
Patrick.
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PatrickDickey52761
DD-WRT Novice


Joined: 16 May 2015
Posts: 8
PostPosted: Sat May 30, 2015 14:39    Post subject: The solution Reply with quote
I was able to get the IPv6 to show up on my devices by using a combination of things (some of which probably won't apply to others).

I followed the suggestion made by JAMESMTL in his post.

Then I enabled radvd and added the following to the custom config
Code:

 interface br0 {
 MinRtrAdvInterval 3;
 MaxRtrAdvInterval 10;
 AdvLinkMTU 1447;
 AdvSendAdvert on;
 prefix 2001:470:1f11:830::/64 {
 AdvOnLink on;
 AdvAutonomous on;
 AdvValidLifetime 86400;
 AdvPreferredLifetime 86400;
 };
 RDNSS 2001:470:20::2 {};
 };


Note the MTU is 1447, because my MTU is 1467 on my IPv4. So your MTU may be different.

I also had to add an echo statement to my startup. This is because my actual DHCP/DNS is provided by another device on my network--so I had to redirect the router there.

Hopefully this will help others (and myself if I have to do this again in the future).

Patrick.
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