Recently I purchased a Sonos speaker, added it to a dedicated Wi-Fi network and tried to make the official Android app work when my phone is connected to another network. This article was used as a starting point:
Despite all my attempts the app couldn’t find the speaker, so I started digging around and found this bug:
It seems that there was a bug in the Linux kernel that broke igmpproxy. It was fixed in version 4.15, but Turris OS 4.0.5 uses version 4.14.162.
I would like to know if our version of the kernel is affected by this issue, because the symptoms look similar. If it’s not, I’ll post more details about my network and firewall configuration and hope someone will help me to figure this out I would really like to keep all those “smart” devices isolated from my home network as much as possible.