Problem with IPv6

[casaper]

Hello

It seems I'm in trouble to get IPv6 working from my lan Client.
The ASUS RT-AC66 (with Merlin 376.49_5) can reach IPv6 Internet on the shell.

But from my OS X Yosemite Client, it doesn't seem to get anywhere further than the router.

I tried to add new routes manually on the ASUS Router and on the Mac, but non them seemed to work.
Obvious that there is some route missing, but I simply don't get what would fix it.

Because this Site seems to fight some DDOS attack, I happen to be unable to paste all my config and so output here. I used pastebin instead. The data is slightly anonymized with strings like $MY_IPV6_WAN_IP.
​

Router:

• Asus Router Net config dumps
• filter_ipv6.default
• dnsmasq.conf

Mac:

• Routing Table
• IF-Config
• Pinging stuff

Config in the Merlin GUI:

• WAN IPv6 Address: 2001:1620:5:1::$MY_WAN_IPV6
• WAN Prefix Length: 64
• WAN IPv6 Gateway: 2001:1620:5:1::1
• LAN IPv6 Address: 2001:1620:$MY_IPV6_NETWORK::1
• LAN Prefix Length: 48
• LAN IPv6 Prefix: 2001:1620:$MY_IPV6_NETWORK::
• IPv6 DNS Server 1: 2001:1620:2777:1::10
• IPv6 DNS Server 2: 2001:1620:2777:2::20
• IPv6 DNS Server 3: 2001:4860:4860::8888
• Enable Router Advertisement: Enabled
• Enable DHCPv6 Server: Enabled

 

[torchddv]

Did you try turning off the IPv6 firewall? I'm having similar issues when the firewall is turned on.

 

[casaper]

Hello

Did you try turning off the IPv6 firewall?

It is off!
I turned this off from the start, to cut out possible trouble. Asus-Merlin's ip6tables roules (it still creates rules) are in one of the Pastebin pastes. As far as I can see, they shouldn't be the problem, shouldn't they?
But maybe Merlin is tricking me, with having the firewall turned off not really adapting the rules the right way.

I simply didn't really look at them so far, also because I know that IP-Tables rules are somewhat puzzles most of the time .

Tonight, when I have some spare time to look at them, I will see if I can see myself if the problem is there.
Or if anyone else can see whats wrong there, feel free to tell me …

ip6tabes -L

If it is the ip6table, then it would be a bug to report. We'll see. Thx for your help!

Reg

cas

 

[RussellInCincinnati]

set ipV6 Merlin DNS to auto, use 8.8.8.8 DNS server in ipV4 pages

Hello

It seems I'm in trouble to get IPv6 working from my lan Client.
The ASUS RT-AC66 (with Merlin 376.49_5) can reach IPv6 Internet on the shell.

But from my OS X Yosemite Client, it doesn't seem to get anywhere further than the router.

Worth trying to set the ipV6 connection type to "native", the ipV6 DNS server to auto, and set the ipV4 DNS server manually to the Google DNS helpers at 8.8.8.8 and 8.8.4.4.

This all worked for me on an AC68u with 49_5. Ping times to ipv6.google.com from a Win 7 client are consistently faster than plain old ipv4 pings to google.com.

 

[casaper]

Worth trying to set the ipV6 connection type to "native", the ipV6 DNS server to auto, and set the ipV4 DNS server manually to the Google DNS helpers at 8.8.8.8 and 8.8.4.4.

I tryed it, allthow it is pointless, because my IPv4 is Dynamic with DHCP, but my IPv6 is fixed and the ISP doesn't run a DHCP6.
And my fix IPv6 WAN-IP is in a different network, my ISP's network, than the Network my ISP gave me for my lan. I don't see how this could be configured there in the guy. If at all, this would have to be a non GUI configuration. But I guess it should be FIX-IPv6, if I have Fix-IPv6, in the end … And anyway, It really seems to be some problem in ASUS-WRT, because the IPv6 Internet is perfectly reachable on the router himself (on the shell).
So sadly this is not an option + i even tryed it because of beeing “dispaired” about not discovering the reason for this connection problem.

 

[torchddv]

I'm having the exact same problem. If I ping Google:

ping 2607:f8b0:4002:c05::68

from a command prompt, I get "Destination host unreachable" or "Request timed out". But from a shell to the router through putty, I get a constant stream of successful pings.

 

[microchip]

I'm having the exact same problem. If I ping Google:

ping 2607:f8b0:4002:c05::68

from a command prompt, I get "Destination host unreachable" or "Request timed out". But from a shell to the router through putty, I get a constant stream of successful pings.

you need to use ping6 and not ping

If I do "ping 2607:f8b0:4002:c05::68" I get "host unreachable" Replacing "ping" with "ping6" works(tm)

 

[RussellInCincinnati]

ping ipv6.google.com works

you need to use ping6 and not ping

If I do "ping 2607:f8b0:4002:c05::68" I get "host unreachable" Replacing "ping" with "ping6" works(tm)

You do not need to use ping6 to successfully ping ipv6.google.com with Merlin firmware on AC68u router with TimeWarner cable Cincinnati as ISP. If you have set up ipV6 in the way I described above.