Confusion over "Explicit Group Update Providers" GUPs not becoming GUPs!

Hi all,

I have the following setup which im testing in a lab environment,

I have a central site (named CEN) with a subnet of 10.101.0.0/16 and a remote site (named LON) with subnet 10.111.0.0/16. Clients should download from the GUPs as follows:

Subnet -> GUP

10.101.0.0/16 -> 10.101.0.51 (CEN-FP1)

10.111.0.0/16 -> 10.111.0.51 (LON-FP1)

I have the following liveupdate policy configured at the root level applied to all clients:

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The problem is that the GUPs are not becoming a GUP!

I can check on the server and the SharedUpdates folder is not created ... what am I doing wrong?

Thanks in advance

Ben