Posted: Sun Jun 02, 2019 13:55 Post subject: 6rd Altibox
I am trying to get 6rd working on my DD-WRT router with r39855 std (05/25/19). I have Altibox fiber with a ZyXEL P2812 provided by the ISP. I have removed the Zyxel router, and replaced it by the DD-WRT router. So no bridge mode.
For now i am running with Ipv4 DHCP on VLAN 102, as lot of Danish/norwegian forums says. All good.
Now i am struggling with 6rd provided by Altibox. On their webpage they say:
I have checked alot of websites and forum posts, about firewall and routing rules, and came across a post, where they said "alot of these ipv6 posts are pretty old, and newer builds have all these firewall rules and routes implemented already.
That was a dead end.
My mind came across, that the ISP provided router supports 6rd, so i replaced that for a test, and collected some data.
The IPv6 range is different from what i get with the calculator?! Can it be legacy from an old IPv4 address with the ISP DHCP? The 6rd have been activated for longtime, with the ISP router.
I have applied the new IP range, and now i am able to ping ipv6.google.com from the router. Still no internet access on the clients.
Whats going on here?
I have checked out the firewall and routing configs, multiple times, and found alot of posts but didnt worked out. Even though, the entries were already in the ip6tables, and route table, i pasted them into the command line, as my best conclusion.
As i collected my IPv6 range from a ipconfig on my windows computer, i didnt knew about the IPv6 Prefix Length.
I tried to change it to 30, so it would be Tunnel Client IPv6 Address: 2A00:FD00:FFF5:ZZZZ::2/30
Apply config, reboot router.
Boom, IPv6 Internet access on my Windows. yeahoo.
I tried to change the prefix to 40, 50, 60, and finally 63, was working great.
So I'll stick with 63 as prefix length
I have Telenor, so I have IPv6 directly and have not used any tunnelling.
30 is the prefix length the ISP are getting. Altibox cannot be happy when one customer have used all their addresses. Customer prefixes is from 48-64.
Also I use dnsmasq instead of Radvd for addresses to the client machines.
Thats cool... sounds like your pretty good in Norway with the IPv6 rollout. In DK not even TDC are doing any progress with IPv6. Same with Telia or Telenor, no news about IPv6 for consumers. Only for business. For Altibox 6RD, i see they route through Telia network.
Sure, when all this IPv6 tunnel era is ended, the ISP will be more in control of IPv6 DHCP, it will all be more easy and smooth to setup. I guess with Telenor IPv6, its all DHCP with a custom router.