When it comes to containerized applications, errors can arise from various sources. Recently, a common issue has been reported in the deployment and operation of SafeLine WAF, a container-based web application firewall. The error message typically reads: [ERROR] detect/skynet.go:114 Get “http://safeline-fvm/skynetinfo”: dial tcp: lookup safeline-fvm on 127.0.0.11:53: server misbehaving.

To address this issue, it is essential to understand the root cause of the error. The problem may stem from domain name resolution errors, network connection issues, incorrect service addresses, or container configuration problems. To troubleshoot, verify that “safeline-fvm” is a correct domain name and check its configuration if custom. Additionally, examine the /etc/hosts file inside the container to ensure there are no incorrect IP mappings.

Source: https://dev.to/carrie_luo1/addressing-container-errors-in-containerized-apps-5c91