I have a router with OpenWrt and IPv6 connectivity through a tunnel (HE.net). I need two Wifi connections: one with IPv4 and IPv6, and another one with IPv4 only. Is this possible? Maybe I can set up a firewall rule to block IPv6 traffic on the IPv4-only Wifi network, but I'm not sure how to do it.



This is easy enough. For the interface corresponding to your second wireless SSID, disable IPV6 assignment, router advertisement and DHCPv6 service.


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