Hello,
To understand the operation of CIS, the attached image brings up a query on the IP 192.168.1.32 my PC corresponding to an external camera.
This request is in the # Home network (192.168.1.10> 192.168.1.XX)
IP 239.255.255.250 is a multicast address that is not part of the network Home
In this case to include the address in the local network for this to work
Specific rule to sonos.exe does not allow the exit / entry if the IP address is not within the local network.
The best way is to use a network scanner for information
For information:
It is recommended to assign a MAC address when it comes to connected equipment
For security purposes