Error while starting Docker daemon

I am using Gentoo as Host OS for Docker containers. I have compiled kernel using instructions on page https://wiki.gentoo.org/wiki/Docker#Kernel and I have installed Docker from Gentoo repository. Host system informations: pecan@tux ~ $ uname -a Linux tux 4.12.12-gentoo #8 SMP Sat Oct 7 13:58:47 CEST 2017 x86_64 Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz GenuineIntel GNU/Linux Docker version: pecan@tux ~ $ docker version Client: Version: 17.03.2-ce API version: 1.27 Go version: go1.9.1 Git commit: f5ec1e2 Built: Sat Oct 7 14:50:59 2017 OS/Arch: linux/amd64 Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? Look at "Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?". The same message appears if I try get docker system-wide informations: pecan@tux ~ $ docker info Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? The same error appears if I try run the same command as sudo, so this error applies to daemon. I tried to check if there a mistake in Docker daemon privileges. pecan@tux ~ $ sudo docker info Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? Based on the message I am able to say that maybe Docker daemon not running. I checked daemon status to make sure: pecan@tux ~ $ sudo service docker status * status: crashed Docker daemon is crashed. To see the reason, I looked at the logs: pecan@tux ~ $ cat /var/log/docker.log time="2017-10-07T14:52:13.178261811+02:00" level=info msg="libcontainerd: new containerd process, pid: 32311" time="2017-10-07T14:52:14.434232306+02:00" level=info msg="Graph migration to content-addressability took 0.00 seconds" time="2017-10-07T14:52:14.434413425+02:00" level=warning msg="Your kernel does not support cgroup blkio weight" time="2017-10-07T14:52:14.434423960+02:00" level=warning msg="Your kernel does not support cgroup blkio weight_device" time="2017-10-07T14:52:14.434759986+02:00" level=info msg="Loading containers: start." time="2017-10-07T14:52:14.437180876+02:00" level=info msg="Firewalld running: false" Error starting daemon: Error initializing network controller: list bridge addresses failed: no available network Currently, that is a point in that I do not know what should I do to be able run Docker daemon. Useful informations: - I am connected to OpenVPN through UDP. - I have disabled iptables and ip6tables. - I have set 8.8.8.8 and 8.8.4.4 DNS providers. - I have running privoxy and tor daemons. - I use OpenRC init system. Can you help me?