When packet capturing my WAN physical interface, I saw Router Advertisements from my router, even though I have set interface to LAN in Dnsmasq (both General - Default and DHCP ranges). How to fix this?
My WAN interface is PPPoE for IPv4 and DHCPv6 for IPv6 on igb1 (I packet captured igb1). The igb1 port is connected to the ISP ONU in bridge mode. However the ONU is also plugged into my switch (with a LAN port) because the modem also has AP functionality. The ONU port that connected to igb1 is bound to the bridge mode connection.
p.s. Although I don't remember this happening in 25.7, I now suspect the bridge port was not excluded from LAN during ISP configuration. I'll reply to this post if I manage to get the modem's admin account.
Yep the bridge port is definitely not excluded from LAN, all LAN peers are also on WAN in Neighbors - Automatic Discovery.