I upgraded my RT-N66U to latest Merlin release (380.64_2) and the firewall filter rules stopped working. Reset to default settings did not help. Both the "whitelist" and the "blacklist" option seem broken. No matter what I try I have not been able to stop my devices from accessing WAN. Is this a known bug?
Also what is the recommended way of configuring the firewall to block a few selected devices from accessing WAN?
Also what is the recommended way of configuring the firewall to block a few selected devices from accessing WAN?