Hello,
i used the DHCP-Option “6,xxx.xxx.xxx.xxx” to give my clients a special DNS Server. This works like a charm and i never had a problem.
Now i wanted to install “adblock” https://doc.turris.cz/doc/en/public/adblock
I followed the instructions and changed the DNS server of my clients to the ip of my turris omnia (192.168.0.2). But my clients can not resolve any DNS names, i only get this message:
nslookup google.de 192.168.0.2
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 192.168.0.2
DNS request timed out.
timeout was 2 seconds.
So i thought something doesn’t work with adblock and i restored an earlier config of my router and change the DNS server IP to 192.168.0.2. But this hasn’t helped me.
If i execute “nslookup google.de 192.168.0.2” on my turris omnia everything seems fine:
Server: 192.168.0.2
Address 1: 192.168.0.2
Name: google.de
Address 1: 216.58.210.3 fra16s07-in-f3.1e100.net
Address 2: 2a00:1450:4001:816::2003 fra16s07-in-x03.1e100.net
I tried to disable DNSSEC and enable DNS forwarding without success.
Maybe some of you can help me with my problem.