👀 Views: 142 💬 Answers: 1 📅 Created: 2025-06-06

docker ubuntu networking bash

I've been struggling with this for a few days now and could really use some help. I'm experiencing a frustrating scenario where my Docker container want to access the host network. I'm running Ubuntu 22.04 and have configured the Docker daemon to allow host networking. However, when I try to ping an external address from within the container, I receive a 'Network is unreachable' behavior. I've verified that the container is running in 'host' network mode using the following command: ```bash docker run --network host --rm -it alpine /bin/sh ``` Inside the container, when I run `ping 8.8.8.8`, it returns: ``` ping: 8.8.8.8: Network is unreachable ``` I checked my firewall settings using `ufw status` and it shows that the firewall is inactive: ``` Status: inactive ``` Additionally, I've confirmed that there are no custom iptables rules blocking traffic. My `/etc/docker/daemon.json` file contains: ```json { "iptables": false } ``` I tried restarting the Docker service with: ```bash sudo systemctl restart docker ``` but the scenario continues. I’ve also attempted to set the network mode to bridge instead of host, but that didn’t resolve the scenario either. I confirmed that the Docker service is running properly: ```bash sudo systemctl status docker ``` and it shows `active (running)`. Is there a specific configuration or setting I might have missed to get networking working properly within my container? I'm looking for any insights or troubleshooting steps that could guide to solve this question. For context: I'm using Bash on Ubuntu.