Hi all, I've search far and large for some insight on what is happening to me but I can't find quite the same issue as I have. IPv6 still being in it's infancy I suppose. That and having a few foreign concepts to IPv4.

 

So here is my setup : I managed to obtain a routable IPv6 from my ISP configuring my UDM Pro with a SLAAC Connection and /56 Prefix Delegation.

 

On the wan interface, I got an IP looking like : 2606:6d00:xxxx:xx23:zzzz:zzzz:zzzz:9197

 

Then, on my LAN interface, I got a subnet looking like : 2606:6d00:xxxx:xx24::/64

 

In Unraid, I configured my eth0 Interface (Interface description = top-left) with bridging with both network protocol (IPv4+IPv6), Static IPv4 (192.168.1.230/24) and automatic IPv6.

 

It got an IPv6 adress looking like : 2606:6d00:xxxx:xx24:zzzz:zzzz:zzzz:a410 and the link local adresse of my gateway (fe80::yyyy:yyyy:yyyy:4180) as a gateway adress, which is per protocol, all right, even if unsightly.

 

To make sure it was all routable from the internet, I tested an IPv6 only traceroute to 2606:6d00:xxxx:xx24:zzzz:zzzz:zzzz:a410 from an online tool, it got to my router's WAN interface alright. And i can login to my Unraid WebUI using [2606:6d00:xxxx:xx24:zzzz:zzzz:zzzz:a410].

 

In my docker settings, i got my IPv4 and IPv6 custom networks selected :

IPv4 custom network on interface br0: Subnet: 192.168.1.0/24 Gateway: 192.168.1.1 DHCP pool: not set

IPv6 custom network on interface br0: Subnet: 2606:6d00:xxxx:xx24::/64 Gateway: fe80::yyyy:yyyy:yyyy:4180 DHCP pool: not set

 

(in case that's important)

 

Docker custom network type: macvlan

Host access to custom networks: Disabled

Preserve user defined networks: No

 

So now, the meat and potatoes. 

 

All my docker containers are configured with the UI (No fancy docker compose) with "Custom : br0 -- top-left" Network Type and fixed "IPv4" addresses.

At the right of the "Fixed IP address (optional):" field, i got "Subnet: 192.168.1.0/24". For the life of me, I can't get my IPv6 subnet to show up AND then i'm not sure how I would even specify the IPv6 adress or tell it to use SLAAC to get one.

 

HELP ? :)

 

 

Which unraid version?
Please post unraid diag file....

plugin tips and tweaks touches some ipv6 stuff for network. systectl may need adational ipv6 for your use case...

see posts:

 

 

Hi, thanks for taking the time.

 

My UnRaid version is 6.12.13.

 

Here is the requested diagnostics

 

untheran-diagnostics-20241112-2258.zip

 

Before going deep in the routing stuff and systemctl etc ... I just don't see the configured subnet here (and I am not sure where i would specify the desired Static IPv6 IP address)

 

Unraid has a properly configured IPv6 and is pingable, and the subnet is visible in the docker configuration page.

 

Well, I got it !

Updated to 7.0.0 beta4 as there was a few IPv6 fix listed for docker, didn't want to take chances.

Didn't work.

 

Then I removed the bridge as I don't really use it and also enabled host access to custom networks. (Edit: host access created a duplicate of my Unraid IP under a new MAC, triggering some annoying notifications in UniFi. I reverted back this setting to Disabled, and everything keeps working fine, so no need for host access for IPv6 to work, it was just the bridge ! )

 

Then the subnet appeared in my container settings !

 

Now to define the IPs, all I had to do is setting the Fixed IP field properly (adding the IPv6 following a coma after the IPv4.

 

Instead of : [ 192.168.1.2 ], do this : [ 192.168.1.2, 2606:6d00:zzzz:zzzz::1:2 ]

 

Thanks for pointing me in the right direction

Edited November 13, 20241 yr by Altheran