Package: docker.io Version: 18.03.1+dfsg1-5 Severity: important Tags: upstream Forwarded: https://github.com/docker/for-linux/issues/136
Newer versions of dockerd add the DOCKER-USER chain and modify the FORWARD chain of the system, even when specifying the --iptables=false command line option. This used to work in version 1.13.1. -- Ilias