Unable to join a homegroup Windows 7 with a network that spans a wireless bridge

I have two Windows 7 machines that are at the ends of the face of a wired LAN network which connects via a wireless bridge and I am unable to get Windows 7 machines on each side of the brdige to connect to a homegroup created across the bridge.  Perhaps to better illustrate what I mean, here's my network configuration:

Wireless router:
Machine from Windows 7 1 (LAN wired to the router)
Windows XP machine (for LAN cable to the router)

Wireless Bridge (connect wirelessly to the wireless router):
Computer Windows 7 2 (LAN wired to the bridge)
PS3 (wired LAN to the bridge)
TV (cable LAN to the bridge)

I use the bridge wireless set up so that I can connect LAN devices wired to the wireless bridge so that they appear to be on the same local network as all other devices on the wireless router (stops to have at home and the bridge wire wireless allows me to expand the scope of all wireless devices I might have).  While all the machines can meet without a problem and I can't even set Windows Media Player to stream video to the PS3 and the TV through its capabilities of DLNA, Windows 7 network mapping server shows not the systems connected to the other end of the gateway wireless as being on the same network (although it shows them); so Windows 7 Homegroup does not see other machines as being on the same network.

The only thing I can think to do with limitations in TCP/IP regarding a wireless bridge, from the perspective of wireless router all connected to the wireless gateway devices appear to be a device (they all appear under the same physical MAC address as the device only "wireless" that connects to the network is the wireless bridge - who just happens to have three other devices connected to it) even if they are assigned to different (numbers) IP that are in the same subnet, etc.).  So I guess what I'm wondering Windows 7 has a limiation to recognise the devices connected via a wireless bridge?  Has anyone else encountered this problem and found a work around?

Thank you.

I had this same problem (unable to connect to a Windows 7 homegroup) on Windows 7 (64-bit) PC behind a wireless bridge using a D-Link DAP-1522 to a D - Link DIR-655 residing on the main network.

The solution that worked for me was to allow for the "'wireless MAC CLONING ' with 'Source MAC = Auto" on the DAP-1522. "  It also had the beneficial effect of the side to fix a problem on PC behind the bridge where control Panel\All Control Panel Items\Network card cannot display all the network devices.

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