How to Fix Missing Network Config After Offline Ubuntu Server 24.04 Install

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Installing Ubuntu Server 24.04 LTS without a network connection during setup results in an unconfigured network interface post-installation. The installer skips network profile creation entirely, leaving the /etc/netplan directory empty and systemd-networkd disabled. Users can resolve this by manually creating a Netplan YAML configuration file that assigns the interface to DHCP and sets networkd as the renderer. After setting correct file permissions, the systemd-networkd service must be enabled and started. Running 'netplan generate' and 'netplan apply' then activates the new configuration and brings the network interface online.

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