Need Help Setting Up 3 VLANs (Home, Guest, IoT) on ASUSWRT-Merlin (RT-AC86U)

I'm trying to set up three isolated networks (VLANs) on an ASUS RT-AC86U running ASUSWRT-Merlin 386.10_0: br0 (Home) – default LAN br1 (Guest) – for guests, works fine br2 (IoT) – this one is problematic My goal: Each VLAN should have: A separate subnet and DHCP range Internet access Isolation (IoT → no access to br0/home or br1/guest) What I’ve done: Activated second guest network in GUI and called IoT then also done. Created the bridge and interface: brctl addbr br2 brctl addif br2 wl0.2 ifconfig br2 192.168.20.1 netmask 255.255.255.0 up Configured dnsmasq for br2 (in /jffs/configs/dnsmasq.c

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