I am a bit of a pfSense guy, love it's Firewall/Rules flexibility, I have read setting up dummy IPs for cameras that try to get out the Internet that try to phone home, don't know the details but sounded like a type of proxy to me. I will have to look into OpenWrt, I see it manages VLANs, on pfSense VLANs are very easy to manage...been playing with IPv6 lately, 2.5 had a few issues which they ironed out...2.5.1I don't post much anywhere, but I read a lot and have been doing IT for about 35 years now and all the routers I use now and install for clients have been reflashed with OpenWrt. Personally I believe it is the best safe method of connecting to the internet. You can use it in it's vanilla clean form and it will work fine, or you can add packages like OpenVPN, ZeroTier, Wireguard or many other VPN's. You can also add hundreds of other packages, some of which will let you capture and view network traffic that is going onto the internet. It really is quite interesting to see just what a new camera is trying to get resolved via DNS and then also is trying to directly access via TCP and sometimes UDP. I have one (inherited) client site that has 9 chinese cameras that all stop working after they get blocked from their "phone homes" after 48 hours. I have tried other systems like DD-Wrt, pfSense, and Untangle and many others that were similar, or forks, and settled on OpenWRT as it can run on $50 wifi access points up to full blown PC's with multiple networks cards and recently a range of PoE switches. This is making OpenWrt very interesting as it exposes the PoE stats of the switch and allows much control / monitoring as well. That said I use mostly cameras from Dahua via Andy, but monitor and then block any traffic that is not wanted, which is not much from them, usually when I forget to turn off something.