Anysphere Dev Containers remote.localPortHost not honoured

Bug Reports
1

Describe the Bug

When using a Anysphere Dev containers with a config setting of
"remote.localPortHost": "allInterfaces"
ports are not forwarded to the external interface. Further to this, there appears to be no way to access the port externally. This prevents testing of alternate operating systems on my VM.

Steps to Reproduce

Ensure that settings.json contains
"remote.localPortHost": "allInterfaces"
run a devcontainer with an application port forwarded (eg. a laravel application with port 8000 forwarded). Try to access the application on the external network interface (eg http://192.168.1.100:8000). You will be unable to connect.

Expected Behavior

When "remote.localPortHost": "allInterfaces" is set in the config, the forwarded ports should be accessible on the systems external network interface.

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.2.4
VSCode Version: 1.99.3
Commit: a8e95743c5268be73767c46944a71f4465d05c90
Date: 2025-07-10T16:59:43.242Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Linux x64 6.6.90-1-MANJARO

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

3

Hi @Prismo, thank you for this bug report. We are working on supporting this setting.

4

Hi @ravirahman,thanks for your reply. In the meantime, is there any other way to expose the forwarded ports on the external interface?

6

Hi @Prismo, we just released version 1.0.15 of the Remote Containers extension which supports this setting. Could you try upgrading the extension?