====== Promiscuous Mode ======
<color #db5f0b>Jul 2017</color>
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This setting caught me out when I was trying to use tcpdump to capture some multicast traffic. Normally, the capture service (in this case tcpdump ) puts the interface in to 'Promiscuous' mode, but I was still not able to capture any multicast traffic. 
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I used the ESXi web interface to edit the Port Group to enable Promiscuous mode manually.
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{{ ::vmware_promiscuous_mode.jpg?800 |}}
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After this, tcpdump was able to see the incoming multicasts.
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