Bolt not connecting to minis

Usually when this happens, I start with power cycling the mini end points. If that doesn't work, I power cycle my Bolt. Today all mini end points in my system said they couldn't see the Bolt. I power cycled everything including the router and network switch. I can use network based remote control and the Bolt Ethernet port tests OK. I even moved the Bolt and one mini end point to Ethernet ports on the router (it has 4 ports) instead of the network switch. Each mini end point says the internet connection is fine. All IP addresses are in the same range. I'm truly perplexed. Did Tivo release a software update that introduced this problem? Running 21.10.2.v22-USC-11-849 Help!