Blocking IPv6 broadcast

["Sharef Mustafa" <sharef.mustafa () paltel net>]

Hi,

 

I have a customer connected to my Cisco 3560 switch via Gigabit
Ethernet, recently I noticed that he is broadcasting IPv6 packets

such as LLMNR, DHCPv6 and ICMPv6 it seems that the customer is
connecting a Vista machine that has some IPv6 services enabled 

(some IPv6 services are enabled by default on Vista)

 

How can I block such broadcast from entering my network?

By the way there is no firewall in this setup, just a switch to switch.

 

BR

 

Sharef