Spark & Android woes

[Rufus McDufus]

I'm clueless as to how the Dialog discovery works but I'll take a punt that it could be to do with multicast discovery, usually SSDP, not working with your new router. Could be a setting on the router called IGMP snooping or IGMP proxy that might be disabled by default? That's a bit of a wild guess but might be worth checking. Someone will come along and give the real reason soon!