I have a 877 which I am troubleshooting some mDNS (188.8.131.52:5353) issues.
One client sends a mDNS request, the router sees it (packet debug) but the packet is not received by any other client on the wireless LAN.
Given it is link local I don't believe that enabling PIM (which I have done anyway).
I have investigated if there is anything that I would have to do to enable multicast for my wireless clients, on WLCs there is a multicast and broadcast config command which explicitly enables it.
Any directions would be appreciated.