XPS 13 with 4.0 Kernel - success! But: docker - Failure

Hi,

I recommend this post - it took me towards a working XPS13 (bought the Windows edition, wouldn't want to wait;-) in very little time.

forthescience.org/.../installing_ubuntu_14_04_on_the_new_dell_xps_13_v2

But the Docker demon wouldn't run. It has two issues: UDEV sync and NAT, output is: 

WARN[0000] Udev sync is not supported. This will lead to unexpected behavior, data loss and errors
INFO[0000] +job serveapi(unix:///var/run/docker.sock)
INFO[0000] Listening for HTTP on unix (/var/run/docker.sock)
INFO[0000] +job init_networkdriver()
Unable to enable network bridge NAT: iptables failed: iptables --wait -t nat -I POSTROUTING -s 172.17.42.1/16 ! -o docker0 -j MASQUERADE: iptables v1.4.21: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
(exit status 3)

Now, I'm recompiling the Kernel for NAT support. Any tips about UDEV sync?

M