Comment on Help with Getting My Reverse Proxy to Forward the Correct IP Address

• Ooops@feddit.org ⁨3⁩ ⁨weeks⁩ ago

  Well… it’s the default iirc (192.168.65.0/24). So that’s what docker uses if there is no explicit configuration.

  source

  • lemmyvore@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

    Is it?! I always thought that Docker uses 172.16.0.0/16 by default for its networks. Did that get changed at some point?

    source

    • Ooops@feddit.org ⁨3⁩ ⁨weeks⁩ ago

      That’s what the documentation says. I don’t know if/when that changed as I barely use docker.

      source

      • lemmyvore@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

        Well I’ll be damned, there’s a 192.168. tucked away at the end of the 172. ranges:

        docs.docker.com/engine/network/#automatic-subnet-…

        {
          "default-address-pools": [
            { "base": "172.17.0.0/16", "size": 16 },
            { "base": "172.18.0.0/16", "size": 16 },
            { "base": "172.19.0.0/16", "size": 16 },
            { "base": "172.20.0.0/14", "size": 16 },
            { "base": "172.24.0.0/14", "size": 16 },
            { "base": "172.28.0.0/14", "size": 16 },
            { "base": "192.168.0.0/16", "size": 20 }
          ]
        }
        

        source
  • ampersandrew@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    It appears to be, but I didn’t know that until today. And beyond that, I’ve been trying every permutation of both that IP and the IP of the server on my network in my Jellyfin proxy settings, and it still hasn’t helped to surface the origin IP address.

    source
• lemmyvore@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

  I think I’ve figured it out. Apparently now Docker also adds an 192.168. range on top of 172. ranges for its bridge networks:

  docs.docker.com/engine/network/#automatic-subnet-…

  Copy that example to your /etc/docker/daemon.json on the reverse proxy machine, without the 192.168 line, and restart docker, and the 192.168.65. addresses will go away.

  (Don’t forget to remove the trailing comma on the last address line.)

  source