Maybe I am missing something, however, if you are using Roon with an 808v6 why are you not simply using the ID41 input on the 808v6 and avoid the unnecessary step through the 210? Possibly answering my own question in that clearly the 808v6 requires a wired Ethernet connection; one can use a WiFi to Ethernet converter such as an old Apple Airport Express to provide such a connection to the 808v6 if WiFi is your only option.

Otherwise, as per Chris's note above, use the Meridian configuration program to check how the inputs are configured within the 808v6.

John

808v6, M60, MC200, HD621, Lumagen XE, 504, SB Touch, 563, 201, 204, 208, MPMAX 221, M80, Explorer, Explorer2.