[janthony6]

Having a lot of trouble configuring my IPV6. I tried going 6to4 but have no idea where to put everything.

Att supplies me with:
Default gateway: 2602:300:xxxx:xxxx::1
6rd BR: 12.83.49.81
6rd prefix: 2602:300::/28
6rd Delegated Prefix: 2602:3xx:xxxx:xxxx::/60
MTU:1472

I also tried using a startup command found here:
https://gist.github.com/VictorLowther/2969270

The router shows 2602:300::1 as the address so this didn't work either.

Anybody have any ideas?

[Mile-Lile]

you have to shoose DHCPv6 with Predix Delegation or Native ipv6 or 6in4 from drop down menu (ipv6 tab)... then click Save button and new fields will be shown to populate with infos from your ISP...

[janthony6]

Right. 6to4 is the way to do it. Problem is that I don't know where that above info goes.

[janthony6]

Here's the issue - the RG is in DMZ+ mode. But it's not a true bridge and doesn't have that option. When ipv6 is on in the LAN side of the RG, it manages the ipv6 and sees my router as 1 device. Thus all of my devices don't work.

The way to have this configured is for ipv6 to be off on the RG LAN side and get access to the full 64 on the wan side by setting up a 6to4 tunnel.

I have the above info to enter in but have no idea where to put it. It would be a lot easier if ddwrt had a 6rd config option like stock Asus routers do.

[janthony6]

for those wondering - i solved my issue.

att fiber is a headache with their RG. Bypass it using a VLAN switch. now the ONT goes direct to my router.

i can't figure out DDWRT 6to4 config so I went back to netgear firmware since they have a 6rd setup option. I now have ipv6 working properly.

[Per Yngve Berg]

Don't you get IPV6 directly from you ISP with DHCPv6 with Prefix Delegation instead of tunneling it through IPV4?

Tunneling will lower your throughput cpmpared to native routing.

[janthony6]

Att doesn't do dual stack. If you do dhcp-pd it won't work. Att is 6rd.

If you try to do it through their gateway, it will never work properly. Their gateways block icmp and protocol 41 even in passthrough.