PGM doesn't work when pub and sub are on same machine on Windows

[taschmidt]

Is this expected? Using clrzmq 3.0.0-rc1 on Windows 8 x64, I wrote a small test app to do pub/sub multicast using PGM. If I run the pub and sub on separate machines, it works fine. But if I run them on the same box, I get nothing on the sub end. I should note that in either scenario I can see the PGM packets in Wireshark. The packets look the same except for, obviously, the source IP.

How do I get this to work?

Thanks,
tim