Демон Docker во FreeBSD не запускается: проблема с графическим драйвером и zfs

Я на x86 FreeBSD. Я следовал инструкциям здесь: https://wiki.freebsd.org/Docker.

Когда я запускаю докер, я получаю

[root@udoo:dev ]# docker run -it quay.io/skilbjo/router-logs bash
Cannot connect to the Docker daemon. Is 'docker -d' running on this host?

Поэтому я перезапускаю демон...

[root@udoo:dev ]# service docker start && docker -dD
Starting docker...
DEBU[0000] Registering GET, /info
DEBU[0000] Registering GET, /images/search
DEBU[0000] Registering GET, /containers/ps
... etc ....
DEBU[0000] Registering POST, /containers/{name:.*}/pause
DEBU[0000] Registering POST, /containers/{name:.*}/exec
DEBU[0000] Registering POST, /containers/{name:.*}/rename
DEBU[0000] Registering DELETE, /containers/{name:.*}
DEBU[0000] Registering DELETE, /images/{name:.*}
DEBU[0000] Registering OPTIONS,
WARN[0000] Kernel version detection is available only on linux
DEBU[0000] Warning: could not change group /var/run/docker.sock to docker: Group docker not found
INFO[0000] Listening for HTTP on unix (/var/run/docker.sock)
FATA[0000] Error starting daemon: error initializing graphdriver: Failed to find zfs dataset mounted on '/var/lib/docker' in /proc/mounts

некоторая другая полезная информация (точно так, как описано в документах):

[root@udoo:dev ]# zfs list
NAME           USED  AVAIL  REFER  MOUNTPOINT
zroot         10.6M  3.74G    23K  /zroot
zroot/docker  10.4M  3.74G  10.4M  /usr/docker
[root@udoo:dev ]# zpool list
NAME    SIZE  ALLOC   FREE  EXPANDSZ   FRAG    CAP  DEDUP  HEALTH  ALTROOT
zroot  3.88G  10.6M  3.86G         -     0%     0%  1.00x  ONLINE  -
[root@udoo:dev ]# docker version
Client version: 1.7.0-dev
Client API version: 1.19
Go version (client): go1.8.3
Git commit (client): 582db78
OS/Arch (client): freebsd/amd64
Cannot connect to the Docker daemon. Is 'docker -d' running on this host?

Что тут происходит? Почему демон docker не загружается? Я нашел очень мало, исследуя "/var/lib/docker in /proc/mounts".

РЕДАКТИРОВАТЬ: предложение @tarun-lalwani приближает меня, но еще не совсем началось...

DEBU[0000] Warning: could not change group /var/run/docker.sock to docker: Group docker not found
INFO[0000] Listening for HTTP on unix (/var/run/docker.sock)
DEBU[0000] [zfs] zfs get -rHp -t filesystem all zroot/docker2
DEBU[0000] Using graph driver zfs
DEBU[0000] Using default logging driver json-file
DEBU[0000] Creating images graph
DEBU[0000] Restored 0 elements
DEBU[0000] Creating repository list
DEBU[0000] [bridge] init driver
WARN[0000] port allocator - using fallback port range 49153-65535 due to error: open /proc/sys/net/ipv4/ip_local_port_range: no such file or directory
DEBU[0000] [bridge] found ip address: 172.17.42.1/16
FATA[0000] Error starting daemon: unknown exec driver native