IPv6 with OpenWrt

There are at least three ways to use IPv6 ith OpenWrt: Prefix Delegation, NDP Proxy and 6in4 tunnel with Hurricane Electric or the like. In this video we will walk through the configuration for each of them.

The IPv6 from Scratch Episodes are here:

0:00 IPv6 with OpenWrt
01:02 Option 1 – Prefix delegation
04:37 Special case: PPPOE
05:43 Firewall rules WAN side
06:54 LAN interface settings
10:23 Configuring DHCPv6 options
15:24 static leases and DNS
19:53 Option 2 - NDP proxy – no prefix delegation
21:54 Option 3 - 6in4 tunnel

[ChAnTi]

Oh yes. Recently I payed attention to the fact that my ISP routers a really a mess, because no way to configure DNS Server or ipv6 while getting dual stack. Having a amd64 hardware ready to replace it, just stumbling again over ipv6 in my environment and you come around with openwrt as the savior. Thank you again for being always ahead.

[dziugas]

Amazing tutorial! Having no idea how to jerry rig „openwrt“ in getting some sort of „IPv6“ internet, your video and calm explanations really helped!

[rous]

thank you, I use openwrt and ipv6 for several years, this is the first time I make it clear how to configure it and what happened in the backend

[healthy]

You are a lifesaver! Thank you for always explaining everything so clearly with GUI tutorials included.

[jck]

Thank you very much for this tutorial. Helped me a lot !!!! I have an OpenWRT behind a fritzbox. Had to enable "Assign DNS server, prefix (IA_PD) and IPv6 address (IA_NA)" on the fritzbox under > "Home Network" > "Network" > "IPv6 Addresses"

[briancoverstone]

Starlink just added full IPv6 recently. I'm using openwrt on my wifi router hooked to it. I was very happy to find out they are doing prefix delegation.

[Major_Meerkat]

This is an amazingly well explained video Marc. I have recently moved from an ISP who only had IPV4 addresses to an ISP that was able to give me an IPV6 address. I wish I came across this video earlier, as I had trouble with setting up a VLAN ID tag for my new connection. Luckily your VLAN video gave me a lot of good pointers to work from. Thanks again.

[lclim]

This is the best Ipv6 tutorial till date (at least for me). Never got it to work (unable to get a valid ipv6 address and failed the test ipv6 test site) a year ago and gave up. You have shown and explained the settings for Lan, Wan6 (recreated if deleted) and why certain check boxes must be unchecked. Follow your guide, it is a break through for me, got valid ipv6 addresses for all devices especially android phones. Currently, Openwrt 21.02.6, WAN side is using PPPOE, WAN6 recreated solution as per your guide. Lan & WAN6 follow your settings. For the WAN side Advanced Settings, I chose "Disabled" for "Obtain IPv6 address" and "UNcheck" "Delegate IPv6 prefixes". Actually I have tried Checked and UnChecked "Delegate IPv6 prefixes", but both options still intermittently failed the test ipv6 site for android phones and Windows 10 PC. My understanding is to unchecked "Delegate IPv6 prefixes" for WAN because WAN6 (recreated) already checked this option . Am I right ? Just want to know the correct settings. Thanks !

[firstnamelastname]

I had a fully working IPv6 setup but I could tweak it and simplify and relax it while also improving it thanks to some of the examples and explanations you gave. Like matching v4 and v6 address end for some particular devices and turning off NDP-Proxy (in my case).

[boink]

I've been using Hurricane Electric IPv6 tunnelbroker for a few years now -- it's top quality.

[lornediebel]

Thanks so much for this. It helped me understand and work through my Starlink setup.
I wanted a my HomeAssistant, behind my router to have a routable address and ipv6 is my only choice since Starlink only gives a CGNAT IP address.
I still have an issue where the Starlink PD disappears after 20 minutes or so. If I reboot the router I get the PD back, but I haven't found any other way.
For now I just turn on DHCP, get the ipv6 IP, PD etc then set that as static. I'm hoping the PD disappearing is a temporary Starlink issue. Anyway....Thank you, thank you, thank you. I'm going now to add you to my Patreon support.

[danielheinrich]

Thank you for the informations about "relay mode". I finally got IPv6 working!

[megapro]

I've watched three videos, it's a bit hard to process them all at once, but at least it became a little clearer, because I used to switch off ipv6 like as an unnecessary problem. Thanks

[戰于长勺]

As a Chinese user, I primarily use Openwrt to set up a transparent proxy, allowing devices in my home to bypass the Chinese government's Great Firewall (GFW). However, when using the Openclash, a client for Clash on Openwrt, I consistently encounter issues with incompatibility with IPv6. In some proxy modes, my x86 Openwrt software router has a WAN IPv6 address, and devices connected to the router are also correctly assigned LAN IPv6 addresses. But IPv6 tests cannot pass normally. It works fine when not using Openclash. I am currently researching and learning the basic principles of the Clash kernel to understand what conflicts are happening.

[hermannpaschulke]

Thanks a lot for your videos about ipv6! Now the only thing left to figure out is how to properly set up dynamic dns on openwrt for a node on the LAN 🤔

[stepannovotny]

Brilliant! I've been waiting months for this! Thanks.

[helloeverybody]

I did most of the changes that youve suggested in this tutorial and my gaming quality took a bad hit, then i suspected like before that IPV6 was the culprit, i stopped the service and tested the gaming quality...it was pretty amazing! No more desync "shoot first and die first" gaming quality, i only had problems against cheaters with 3rd party device's or cheaters using network manipulation like such programs UDP unicorn and other methods of creating a desync in their favor thus causing the shoot first die first for the poor bastards against them lol, thank you very much! ✌👍😃

[marciomcm]

Another great video!!!

Thank you so much for this! I have finally understood IPV6 on OpenWRT!

👏👏👏👏👏

[moltar]

Vielen Dank! Endlich ist mein Server wieder erreichbar und Netzwerk nun auch nach außen IPv6 fähig.

[tasolaris]

These tutorials are some of the best that I've found. Keep it up 🙂