Docker is open-source virtualization software for Linux, typically used to run virtual processes in software "containers" that are isolated from the host OS and other processes. When SEP (Symantec Endpoint Protection) is also installed on the host OS and its autoprotect service is running, Docker containers will not run.
Example error text:
Error response from daemon: Cannot start container 1db540ec0a8f4b88e49df80ae5f68487b1d5c7c0a09c3eb6fb2a3cf2e9b929a9: failed sandbox add: failed to add interface veth61e9fd7 to sandbox: failed in prefunc: failed to set namespace on link "veth61e9fd7": invalid argument
Docker 1.6.x can work with Auto-Protect, but Docker 1.7.x cannot work with AP of older versions.