Enabling multicasting & IGMP Snooping - a possible cure for iOS crashes

[andybob (Andrew Cox)]

Hi Mark,

@ipeverywhere provided a very useful post about multicasting, IGMP and Roon which I’ve linked below. On my good days I can nearly understand it:

Is Multicast / IGMP needed?

This is a confusing thread. Got some time so I’ll try to summarize some networking terminology to help. Roon requires that all devices are on the “same network”. What that really means is the same “broadcast domain”. In networking we define different layers with regard to what part of the components is responsible for making things work. The first 3 layers are: Physical Data Link Network Physical - This is your ethernet switches, cabling, network interfaces, etc. Everything you can touch. Da…