Release Asuswrt-Merlin 3006.102.4 is now available

[RMerlin]

Your reply reminded me to check this since I had just swapped routers yesterday, and sure enough, the DNSFILTER chain was incomplete, as originally reported. This was on a cold boot while also waiting for the cable modem to initialize (on Comcast/Xfinity).

I’ve seen other router platforms recommend using loopback IPs for the redirect, but that doesn’t seem to work on our Linux in some quick tests.

I was able to backport the REDIRECT target from iptables 1.4.19. Testing seemed to work properly for me - when setting the router to Cleanbrowsing, resolving an adult site returned the IP for Cleanbrowsing's block page even when having nslookup set to use an open resolver like Cloudflare.