Cannot resolve name server after moving to another network

[deHakkelaar]

Try flush all those rules for diagnosing.
Might want to do this on console as you might get kicked from ssh.

Admin page shows FTL Offline | Unable to start, cannot access dhcp.leases

Below ones seems to do the trick: sudo iptables -F sudo iptables -X sudo iptables -t nat -F sudo iptables -t nat -X sudo iptables -t nat -L -n -v sudo iptables -t mangle -F sudo iptables -t mangle -X sudo iptables -P INPUT ACCEPT sudo iptables -P OUTPUT ACCEPT sudo iptables -P FORWARD ACCEPT Check afterwards with: pi@noads:~ $ sudo iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source …

And check below again:

dig ns1.pi-hole.net @8.8.8.8

To restore the Netfilter(iptables) rules, just reboot.