diff --git a/.zk/notebook.db b/.zk/notebook.db
index 1a7019d..82cb406 100644
Binary files a/.zk/notebook.db and b/.zk/notebook.db differ
diff --git a/zk/Headless_network_setup.md b/zk/Headless_network_setup.md
new file mode 100644
index 0000000..4ae2627
--- /dev/null
+++ b/zk/Headless_network_setup.md
@@ -0,0 +1,12 @@
+---
+id: hb10
+title: Headless network setup
+tags: []
+created: Wednesday, June 12, 2024 
+---
+# Headless network setup
+
+
+## Related notes
+
+
diff --git a/zk/Network_scanning.md b/zk/Network_scanning.md
index 35b000e..15a9558 100644
--- a/zk/Network_scanning.md
+++ b/zk/Network_scanning.md
@@ -19,4 +19,17 @@ arp-scan --interface=wlan0 --localnet
 nmap -sn 192.168.0.0/24
 ```
 
-## Related notes
+## Check DNS resolution
+
+```sh
+dig google.com
+```
+
+Key output:
+
+```
+;; Query time: 6 msec
+;; SERVER: 192.168.0.4#53(192.168.0.4) (UDP)
+;; WHEN: Wed Jun 12 18:27:27 BST 2024
+;; MSG SIZE  rcvd: 55
+```
diff --git a/zk/Set_DNS_settings.md b/zk/Set_DNS_settings.md
new file mode 100644
index 0000000..3c993c1
--- /dev/null
+++ b/zk/Set_DNS_settings.md
@@ -0,0 +1,44 @@
+---
+id: 2w0e
+title: Set DNS settings
+tags: [Linux, networks]
+created: Wednesday, June 12, 2024
+---
+
+# Set DNS settings
+
+## Change the default DNS server
+
+On Arch and most modern Linux distributions domain name resolution is handled
+via the `systemd-resolved` #systemd configuration.
+
+Within the system systemd files this will be handled in
+`/systemd/network/wired.network` or `systemd/network/wlan.network` files etc.
+
+In the file below I have turned of DHCP routing and specified the address of my
+Pi-hole device to handle domain name resolution:
+
+```
+#wlan.network
+
+[Match]
+Name=wl*
+
+[Link]
+RequiredForOnline=routable
+
+[Network]
+DHCP=yes
+DNS=192.168.0.4
+MulticastDNS=yes
+
+[DHCPv4]
+UseDNS=no
+RouteMetric=600
+
+[IPv6AcceptRA]
+RouteMetric=600
+
+```
+
+## Related notes