# NetworkManager dnsmasq
Use NetworkManager's integrated dnsmasq.

In `/etc/NetworkManager/NetworkManager.conf` enable dnsmasq by setting
`dns=dnsmasq`, e.g.
```
[main]
plugins=ifupdown,keyfile
dns=dnsmasq
```

Disable the stub resolver of systemd-resolvd:
```
cat <<'EOF' > /etc/systemd/resolved.conf
[Resolve]
DNSStubListener=no
EOF

rm /etc/resolv.conf
systemctl restart systemd-resolved.service
systemctl restart NetworkManager
cat /etc/resolv.conf
# "Generated by NetworkManager"
```

Example config files:
```
# use local hosts file
cat <<'EOF' > /etc/NetworkManager/dnsmasq.d/hosts.conf
addn-hosts=/etc/hosts
EOF

# set localhost on port 1053 for the domain "foo"
cat <<'EOF' > /etc/NetworkManager/dnsmasq.d/foo-server.conf
server=/*.foo/127.0.0.1#1053
EOF

systemctl reload NetworkManager
```


## Debugging
List processes listening on UDP
```
netstat -panu
```


## Notes
- systemd-resolvd symlinks `/etc/resolv.conf` to
  `/run/systemd/resolve/resolv.conf`
- NetworkManager writes `/etc/resolv.conf` as soon as the symlink is removed