iamthetotWeird networking issue, seeking help
https://piefed.ca/c/linux/p/629526/weird-networking-issue-seeking-help
ScooptaIs your pihole server the only DNS server set? Either on your PC or router? Is network manager sometimes using a different nameserver?
nmcli device show eth0
Or replace eth0 with whatever interface it is. Will give you a list of all network parameters including the DNS servers. There ideally should only be one, your pihole
There is only one IP4 DNS address, however there are two IP6 DNS addresses for my ethernet interface. However, I also notice that the
GENERAL.CON-PATH ends in 2, whereas I have another interface lo which ends in 1. Would that be a clue of anything?
It’s normal for the loopback con path to end in 1, each con path is unique for each interface. My guess is that if your pihole sometimes works, the IPv4 server is your pihole and the IPv6 servers are ISP provided (especially if there are 2), so they work for the internet but not your internal network. Ideally you would set your pihole’s IPv6 address as your IPv6 DNS as well. Failing that setting the IPv6 mode to “Automatic, addresses only” will make it not used for DNS
Flyswat