BUG REPORT INFORMATION

Description of problem:

I'm using Hypriot docker distro, and face new issue : can't run nor build any more without getting a : "socket operation on non-socket"... Reverting to previous version 1.6.2 make it happen again!
For run it can be solved by --net=host option, but there's not such --net for build.

uname -a:

Linux black-pearl 3.18.8-hypriotos+ #1 PREEMPT Sat Feb 28 22:34:34 UTC 2015 armv6l GNU/Linux

docker version:

Client version: 1.7.0
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 0baf609
OS/Arch (client): linux/arm
Server version: 1.7.0
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 0baf609
OS/Arch (server): linux/arm

docker info:

Containers: 4
Images: 95
Storage Driver: overlay
Backing Filesystem: extfs
Execution Driver: native-0.2
Logging Driver: json-file
Kernel Version: 3.18.8-hypriotos+
Operating System: Raspbian GNU/Linux 7 (wheezy)
CPUs: 1
Total Memory: 228.7 MiB
Name: black-pearl
ID: GMC2:XKB7:KAP3:TRB7:UIX7:5DYN:AFSR:YGAX:QHN6:JA7U:QIDK:FUOZ
Debug mode (server): true
File Descriptors: 9
Goroutines: 14
System Time: 2015-06-25T16:00:53.5021484+02:00
EventsListeners: 0
Init SHA1: 18a9995bdcb962bd58a93d4dc893f85a62f5790f
Init Path: /usr/lib/docker/dockerinit
Docker Root Dir: /var/lib/docker
Username: itwars
Registry: https://index.docker.io/v1/

Environment details : physical RASPBERRYPI

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ENEEDMOREINFO

BR
Vincent