knowledge-base/KB/Linux/Server/DNS.md

---
creation date: 2022-01-08
tags: [note,linux,dns]
---

**Please use a local unbound which is even better!**

Start and enable 

```shell
systemd-networkd
systemd-resolved
```

You probably want to force DNS in `/etc/systemd/resolved.conf`

```ini
[Resolve]
DNS=...

# keep this empty to fail resolving if primary DNS doesn't work
FallbackDNS=
```

**Only if you want to prevent any network manager to change DNS servers**, then execute `sudo chattr -i /etc/resolv.conf; sudo nano /etc/resolv.conf; sudo chattr +i /etc/resolv.conf` to insert the following content:

```shell
options timeout:1
nameserver 80.241.218.68
nameserver 46.182.19.48
nameserver 8.8.8.8
nameserver 1.1.1.1
```
Initial commit of knowledge base 2022-09-04 12:54:22 +00:00			`---`
			`creation date: 2022-01-08`
Manual backup: 2023-11-23 14:37:11 2023-11-23 13:37:11 +00:00			`tags: [note,linux,dns]`
Initial commit of knowledge base 2022-09-04 12:54:22 +00:00			`---`

			`Please use a local unbound which is even better!`

			`Start and enable`

Manual backup: 2023-03-29 18:16:29 2023-03-29 16:16:29 +00:00			```shell
Initial commit of knowledge base 2022-09-04 12:54:22 +00:00			`systemd-networkd`
			`systemd-resolved`
			```

Backup 2024-12-09 19:19:31 +00:00			You probably want to force DNS in `/etc/systemd/resolved.conf`

			```ini
			`[Resolve]`
			`DNS=...`

			`# keep this empty to fail resolving if primary DNS doesn't work`
			`FallbackDNS=`
			```

			Only if you want to prevent any network manager to change DNS servers, then execute `sudo chattr -i /etc/resolv.conf; sudo nano /etc/resolv.conf; sudo chattr +i /etc/resolv.conf` to insert the following content:
Initial commit of knowledge base 2022-09-04 12:54:22 +00:00
Manual backup: 2023-03-29 18:16:29 2023-03-29 16:16:29 +00:00			```shell
Initial commit of knowledge base 2022-09-04 12:54:22 +00:00			`options timeout:1`
			`nameserver 80.241.218.68`
			`nameserver 46.182.19.48`
			`nameserver 8.8.8.8`
			`nameserver 1.1.1.1`
			```