Question

17

What is my DNS server?

rated 0 times [ 17] [ 0] / answers: 1 / hits: 51594 / 2 Years ago, thu, august 4, 2022, 6:50:28

My /etc/resolv.conf looks like this:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

nameserver 127.0.1.1



# OpenDNS Fallback (configured by Linux Mint in /etc/resolvconf/resolv.conf.d/tail).

nameserver 208.67.222.222

nameserver 208.67.220.220

When I use nslookup, I seem to use 127.0.1.1:

moose@pc08 ~ $ nslookup www.google.com

Server:     127.0.1.1

Address:    127.0.1.1#53



Non-authoritative answer:

Name:   www.google.com

Address: 173.194.44.17

Name:   www.google.com

Address: 173.194.44.16

Name:   www.google.com

Address: 173.194.44.19

Name:   www.google.com

Address: 173.194.44.18

Name:   www.google.com

Address: 173.194.44.20

But when I right-click on network manager and click on "connection information" I get:

connection information

whois 217.0.43.129 reveals that this belongs to Deutsche Telekom AG, my ISP.

Why does network manager show this information? What DNS server am I currently using?

dnsmasq

Yes, I seem to run dnsmasq:

moose@pc08 ~ $ ps aux | grep dnsmasq

nobody    1479  0.0  0.0   5468  1404 ?        S    14:16   0:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/var/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 --conf-file=/var/run/nm-dns-dnsmasq.conf --cache-size=0 --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d

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2 Years ago

answered 2 Years ago tonhorn · Accepted Answer

You are using dnsmasq, a lightweight forwarding DNS server that runs locally under the control of NetworkManager. Dnsmasq forwards DNS queries to the DNS servers whose addresses have been provided by the DHCP server. It is also possible to set these DNS server addresses statically using the Connection Editor.

The dnsmasq executable is provided by the dnsmasq-base package on which the network-manager package depends. There is also a package called simply "dnsmasq" which also depends on dnsmasq-base, but this "dnsmasq" package should only be installed if you want to run dnsmasq independently of NetworkManager in order to take advantage of features other than mere DNS forwarding.