Description of problem:
docker reports that bridge networking on RHEL, even when bridge-utils is installed.

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1. docker -d
2.
3.

Actual results:
# docker -d
2013/11/27 13:40:18 WARNING: You are running linux kernel version 2.6.32-358.23.2.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.8.0.
[/var/lib/docker|1bff374f] +job initapi()
[/var/lib/docker|1bff374f.initapi()] Creating server
[/var/lib/docker|1bff374f] -job initapi() = ERR (Error creating bridge: operation not supported)
2013/11/27 13:40:18 initapi: Error creating bridge: operation not supported

Expected results:
2013/11/27 13:41:37 WARNING: You are running linux kernel version 2.6.32-358.23.2.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.8.0.
[/var/lib/docker|30c81777] +job initapi()
[/var/lib/docker|30c81777.initapi()] Creating server
Loading containers: -[error] runtime.go:271 Failed to load container 844a5f802d474b7ec5de5c4ef4678ac3c478bc879ce3a79a5359fa9e760d5716: open /var/lib/docker/containers/844a5f802d474b7ec5de5c4ef4678ac3c478bc879ce3a79a5359fa9e760d5716/config.json: no such file or directory                                                                                                             done.
[/var/lib/docker|30c81777.initapi()] Creating pidfile
[/var/lib/docker|30c81777.initapi()] Setting up signal traps
[/var/lib/docker|30c81777] Register(create) (handlers=map[initapi:0x4911e0])
[/var/lib/docker|30c81777] Register(start) (handlers=map[initapi:0x4911e0 create:0x4aec50])
[/var/lib/docker|30c81777] Register(serveapi) (handlers=map[initapi:0x4911e0 create:0x4aec50 start:0x4aecb0])
[/var/lib/docker|30c81777] -job initapi() = OK (0)
[/var/lib/docker|30c81777] +job serveapi(unix:///var/run/docker.sock)
2013/11/27 13:41:37 Listening for HTTP on /var/run/docker.sock (unix)


Additional info: