Network synchronisation not working?

[ph0t0n]

I have tried to get network synchronisation between two VLC 0.8.6.f instances working, but so far without success.
Am I doing somethin wrong? AFAIK, the following should be syntactically correct:

Server (192.168.1.10):

vlc -vvv --network-synchronisation --netsync-master --sout "#standard{access=http,mux=ogg,dst=192.168.1.10:8888/test.ogg}" ~/test.ogg

Client (192.168.1.20):

vlc -vvv --video-on-top --network-synchronisation --netsync-master-ip 192.168.1.10 http://192.168.1.10:8888/test.ogg

No video is shown in at the client side, just the window.