Problems with XFCE setup and network

I installed `sys` type on my local hdd. Booting up for the first time, everything is fine and everything is working.
I am installing like http://wiki.alpinelinux.org/wiki/XFCE_Setup says.
At first setup-xorg-base than installing alpine-desktop and xfce4.
And than started lxdm. I can see mouse, but it's frozen. Mouse and keyboard doesn't work.
Force restarting, I noticed that IP6 address is not supported or something similar and after that my network doesn't work neither XFCE.

Any ideas how to fix this problem?