Ah OK! I'm using Classic Folders. I thought the Common Tasks were all available but in a different way. But not this one!
When I switch to Common Tasks I can then show uPnP devices. Then when my router has uPnP ON the Router appears under My Network Places and 2nd PC symbol "Internet Connection" (which is of type Internet Gateway) appears on taskbar and in Network Connections. And when my router has uPnP OFF all these things go away.
When I encountered "Internet Connection" way back I was running Classic Folders and my router had uPnP ON.
Thanks, that explains it and shows that OP had uPnP on with his old router but not now.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 19 Meg Tweaked / 16 Meg Untweaked LLU BB