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Family shield on stock D-link firmware not working

Joined
Jan 31, 2012
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Location
East Europe
System Name PLAHI
Processor I5-13500
Motherboard ASROCK B760M PRO RS/D4
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Video Card(s) RX 6800XT
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Mouse Logitech Triathlon
Keyboard REDRAGON MITRA
Software Windows 11 Home x 64
Hi all,

I have a simple problem. I have two different routers on two different locations. First one is an old D-link DIR615. I bought it used and it came flashed with dd-wrt. I input the Family shield DNS and copy/paste these two command lines:

iptables -t nat -A PREROUTING -i br0 -s 192.168.1.128/25 -p udp --dport 53 -j DNAT --to $(nvram get lan_ipaddr)
iptables -t nat -A PREROUTING -i br0 -s 192.168.1.128/25 -p tcp --dport 53 -j DNAT --to $(nvram get lan_ipaddr)

and it works flawlessly. It stops everything it is supposed to stop. However, on my second router: D-link DIR850L with stock firmware I follow the instructions on OpenDNS's page, which is only one thing: change to "enter DNS manually" and input the DNS address from their official webpage. That's all the instructions. I do that and it blocks nothing. What I am missing here? I am really not a "network guy", so anyone has an idea, I'd be glad to listen. And for all that's Monday today...have a lovely day :) It's gonna be a long week.
 
It's probably grabbing the isps ipv6 dns server, if your isp has that. Windows will prefer this over the ipv4 dns server and I've yet to find an easy answer or workaround to that.
 
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