Connectivity Problem with tModLoader - External connection issue

System Information

Field Value
Operating System Linux - Debian GNU/Linux 13 on x86_64
Product AMP ‘Phobos’ v2.6.4.2 (Mainline)
Virtualization Docker
Application tModLoader
Module GenericModule
Running in Container Yes
Current State Ready

Problem Description

Issue

The steam connect link returns an invalid app id when attempting to join. Attempting to join through direct IP times out. Joining through IP on a local device is successful. Port forwarded the port labeled Server with TCP/UDP. Host device is set up with DHCP reservation. Attempting to start an instance with no mods installed and default world settings returns a similar result.

Reproduction Steps

  • Set up tmodloader instance with startup behavior set to nothing
  • Update instance and install desired mods
  • Set desired world settings
  • Port forward and start server
  • Have an external client attempt to connect

Having same issue, did you find a fix?