Network access problem from image

[wimnat]

I created an image using the example Dockerfile but added in an extra plugin - fluent-plugin-splunk.

This plugin errors out when running the container with a "Connection reset by peer".

As a troubleshooting step, I logged in to the container and i was able to ping my host. I then installed telnet and tried to telnet to my Splunk port - this failed.

I then started a standard centos container for testing and i was able to successfully telnet to my Splunk server port.

I then changed my Dockerfile to use the Debian fluent image and faced the same problem.

It seems strange that from other containers i can reach my Splunk server but from the fluentd images i am unable to connect (even though ping works).