We were upgrading a docker set up on one of the staging servers and got this weird error.

Cannot start service CONTAINER_NAME: driver failed programming external connectivity on endpoint

Before doing some heavy troubleshooting sometimes it's good to do the very basic thing to restart the service.

Run this as root. It should start any running containers but you have to check that.

service docker restart

I am assuming that you've taken some backups regarding the steps in the this howto article.

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