Hyper-V 2012 Server Network Discovery

[The_Observer]

I just setup my new Hyper-V 2012 Server, got my first two VM Servers Running, but im trying to work out how to turn off Network Discovery within it. Cause Hyper-V is command based i used this command,

netsh advfirewall firewall set rule group=?network discovery? new enable=yes

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But my server still showing up on the network. Does anyone have any ideas on this.

[cybertimber2008]

The information could be cached for awhile?