Connectivity Problem with Minecraft - Cant connect to forge servers

System Information

Field Value
Operating System Linux - Debian GNU/Linux 13 on x86_64
Product AMP ‘Proteus’ v2.8.0.10 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Ready

Problem Description

Issue

I have been unable to connect to any instance using forge or neoforge but fabric and vanilla work fine.

Reproduction Steps

  • Create Instance with a modpack on forge
  • Server starts fine but no one is able to connect to it
  • Try vanilla servers or fabric modpacks and I’m able to connect just fine