Okay, I'm completely baffled and now I'm going to come to the expert! I have 2 receivers: HR20-100 and HR22-100 Neither can see each other using WHDVR. No SWiM, no DECA. Both are connected using hardwire ethernet connected to a Cisco 3750 switch. Both report authorized for WHDVR and have shared playlists enabled. Both have static IP addresses. Both report no other DVR's detected under whole-home. Both can successfully access YouTube videos. The programs on both can be seen via my old DIRECTV2PC. I have tried resetting the network to default settings, red-button-rebooting them, setting up the network again, to no avail. This has worked just fine before, but after the latest NR it stopped working. What am I missing? Any way I can troubleshoot more? Long-time network engineer and Cisco CCIE, so don't be afraid to be technical.