I was trying to discover services through DNS-SD protocol. To enable it on Windows 10 (version 1909), I followed this answer. However, after the network change, it stops working. No matter you try to reconnect to the old network and reboot.
To recover, I had to change the following registry key:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient\EnableMulticast
from 0 to 1 or vice-versa. I have observed this behavior on 4 Windows machines updated to the last version (1909).
To better understand the problem, I've installed Wireshark to observe ingoing/outgoing packets. When I switch the network, I stop seeing incoming packets related to mdns, but I continue to see outgoing packets.
What's going on? Is this a bug or a misconfiguration?
NOTE: I've also tried to DISABLE the firewall, but it doesn't solve anything, the incoming packets are missing
