With an extensive professional background in system administration coupled with my comprehensive understanding and experience in managing complex network configurations, I am well-suited to troubleshoot and resolve the persistent communication issue you're facing within your Kubernetes environment. My 11 years of working as a senior Linux/Windows system administrator has equipped me with practical knowledge on a range of cloud platforms, including AWS, GCP, and Azure, which will prove invaluable in analyzing the issue on your chosen platform.
Over the course of my career, I have managed numerous servers using different control panels and network configurations similar to your Calico networking plugin setup. In addition, my proficiency in dealing with LAMP installations on Linux and IIS, SQL, FTP, and SMTP services on Windows servers further highlights my robust technical background. It manifests my capability to navigate around divergent settings and rectify problems effectively regardless of the deployment specifics.