Hello,
I received an error message from Gladys when adding a device (matterbridge in this case) without an IPv6 interface enabled in Gladys:
Config
Gladys > Docker > LXC > Proxmox
IPv4 and IPv6 active in Proxmox
IPv4 only in the LXC
Matterbridge > LXC > Proxmox
IPv4 and IPv6 active in Proxmox
IPv4 and IPv6 active in the LXC
I’ll investigate my IPv6 in Gladys’ LXC and get back to you.
Problem solved but by a major cleanup: copying Gladys files and fully reinstalling a new LXC 
… which does have IPv6 and so I was able to add Matterbridge and my shutters without any problems!
Hello,
just a note for those who might get this error message.
The error occurs if Gladys is IPv4-only AND Matterbridge is on IPv4 and IPv6 across two different « machines », that is, two physical PCs, two VMs, two LXC containers, etc., basically two environments that have different IPv4 addresses.
If you put Gladys and Matterbridge in the same docker with network=host and you only have IPv4, then there should be no error (from what we tested during the integration development).
Of course, if you see errors, don’t hesitate to report them.
Enjoy Matter 
Hello community.
I have an IPv6 configuration issue on my Matter settings screen.
However, on the same machine (Proxmox VM) I have the MatterBridge Docker container which seems to be working because I added the Shelly plugin that correctly recognizes the Shelly 1PM on the network.
It seems to me that MatterBridge and Gladys are not on the same network — MatterBridge (from memory) is on a Docker subnet.
I’ll investigate in that direction.
In my opinion, Gladys only has IPv4 and matterbridge has IPv4 and IPv6, and that won’t work.
You need to either enable IPv6 on Gladys or disable it on matterbridge.
