@MG85 said in mDNS traffic from WAN to 224.0.0.251:5353, but why? Please help.:
Setting these values while you have connected the speakers joined to your wireless network (like I have, with my 2 UniFi AP AC Lites, who are the only devices at home broadcasting wifi signal) is of no added value.
For me it is. I don't want them on my Unifi WiFi and I don't want them to use WiFi at all, as there are so much freakin' 2.4GHz WiFis on my premise it's insane. Thus my Unifi WiFi AP only does HT20 on 2.4 and HT80 on 5GHz and has band steering towards 5GHz. Most devices I have can use 5GHz and those who doesn't aren't that speed dependend.
So the last I wanted was another 2.4GHz WiFi that's why every speaker has its LAN cabled and proofed. And if Sonos would get their shit together and actually DO what you select in their app - namely disable WiFi for Room X - I wouldn't have to deal with (R)STP or their bridging of interfaces etc. Just down that freakin' WiFi Interface if I disable it.
As for "no added value": Without LAN cabling: 3 of 5 speakers have yellow/red status in their WiFi-Mesh-Matrix. With LAN and STP all speakers fall back to LAN, have better latency and ping and no bandwith problems at all (all green matrix). Shame they think they're smarter then their customers (and disabled the options to manually disable the wifi if in their speakers).