id = 2876
title = "IPv6 support for hostfwd + guestfwd"
state = "opened"
created_at = "2025-03-20T15:53:48.517Z"
closed_at = "n/a"
labels = ["Networking"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2876"
host-os = "nixos-unstable"
host-arch = "x86-64"
qemu-version = "master (1dae461a913f9da88df05de6e2020d3134356f2e)"
guest-os = "[Arch Linux](https://github.com/archlinux/arch-boxes?tab=readme-ov-file#qcow2-images)"
guest-arch = "x86-64"
description = """When using hostfwd, only IPv4 connections are forwarded."""
reproduce = """1. Start vm with the aforementioned command using a system image that comes with a socket listening on both IPv4 and IPv6. (I used Arch Linux Box which comes with `sshd` enabled by default).
2. Connect to the forwarded socket:
  - IPv4 succeeds:
    - `ssh -oPasswordAuthentication=yes arch@127.0.0.1 -p 52022`
    - `nc -zv 127.0.0.1 52022`
  - IPv6 does not:
    - `ssh -oPasswordAuthentication=yes arch@::1 -p 52022`
    - `nc -zv ::1 52022`"""
additional = """#"""