title: multicast windows 2008 r2 multicast
body: <p>Has anyone seem a problem with reading multicast on a Windows server 2008 R2 machine?
  We're running it on a Dell server PER710 using Xeon CPU's x5678 @ 3.60 GHz with a 64-bit OS.
  Using wireshark I see that when the router/switch sends out a general request every 125 seconds, the server doesn't always re-request for all the groups it's currently joined to.
  If there are no other recipients on the same lan joined to the same groups, I would think the server would need to always re-request for the full set of multicast groups it's joined.</p>
  
  <p>Is this a bug in Windows? Has it been fixed on some firmware upgrade?</p>