chore: ubuntu 24.04 has moved to use networkd and netplan by default,

... rather than the traditional dhclient.conf approach.

Author: samrose

ebssurrogate/scripts/chroot-bootstrap-nix.sh

@@ -157,10 +157,19 @@ function disable_fsck {
 
 # Don't request hostname during boot but set hostname
 function setup_hostname {
-	sed -i 's/gethostname()/ubuntu /g' /etc/dhcp/dhclient.conf
-	sed -i 's/host-name,//g' /etc/dhcp/dhclient.conf
+	# Set the static hostname
 	echo "ubuntu" > /etc/hostname
 	chmod 644 /etc/hostname
+	# Update netplan configuration to not send hostname
+	cat << EOF > /etc/netplan/01-hostname.yaml
+network:
+  version: 2
+  ethernets:
+    eth0:
+      dhcp4: true
+      dhcp4-overrides:
+        send-hostname: false
+EOF
 }
 
 # Set options for the default interface