On Thu, Mar 27, 2025 at 14:34:13 +1030, Mal wrote: > root@debian:/home/user# more /etc/network/interfaces > source /etc/network/interfaces.d/* > # The loopback network interface > auto lo > iface lo inet loopback > > allow-hotplug enp1s0 > iface enp1s0 inet static > address 12.34.56.78 > network 12.34.56.0 > netmask 255.255.255.0 > broadcast 12.34.56.255 > gateway 12.34.56.1 > > iface enp1s0 inet6 static > address 2xxx:xxxx:x00:1::50 > netmask 64 > gateway 2xxx:xxxx:x00:1::1 > dns-nameservers 12.34.56.80 2xxx:xxx:x00:1::80
That dns-nameservers line is only used if you're running the "resolvconf" package. > When I query what is set in resolv.conf file, It only returns the IPv4 host. > > root@debian:/home/user# more /etc/resolv.conf > nameserver 12.34.56.80 I would look at the timestamp on that file. Is it being updated at all? Next, I would verify that you've installed the resolvconf package, since your configuration is relying on it. Or, as another person suggested already, skip the resolvconf package entirely, and just use a static resolv.conf file.
