bug report: Crash when running on IPv6 only network - "Detecting the container IP address failed" #4634
Description
📝 Preliminary Checks
- I tried searching for an existing issue and followed the debugging docs advice, but still need assistance.
- I will disclose any AI assistance I have used with the information I provide in my report, so that I do not waste the time of humans trying to help me.
👀 What Happened?
docker-mailserver/target/scripts/startup/setup.d/networking.sh
Lines 16 to 23 in 0f5763c
will cause a crash when the container is attached to an IPv6 only network.
The whole crash could also have been prevented in the first place because by default PERMIT_DOCKER is set to none and therefore no IP resolution is needed in the first place.
👟 Reproduction Steps
- Create a IPv6 only network using for example:
docker network create --ipv4=false --ipv6 traefik-mail - Attach the docker mailserver container to it
🐋 DMS Version
15.1.0
💻 Operating System and Architecture
irrelevant
⚙️ Container configuration files
📜 Relevant log output