Sysconfignetwork

Sysconfignetwork is a software component that centralizes the loading and application of network configuration on a computer system. It provides a single abstraction for settings such as interface addresses, routing, DNS, and related parameters, and aims to work with multiple networking backends and init systems. In typical deployments, it reads configuration data from a dedicated store and applies the desired state to the system.

Configuration data is usually organized per interface (for example, eth0, wlan0) and includes address family, IP addresses or DHCP preferences, prefixes, gateways, DNS servers, MTU, and whether the interface is managed at boot. It may also specify routing policies, DNS search domains, and DHCP behavior.

Lifecycle and workflow: at boot or when triggered, sysconfignetwork reconciles the desired configuration with the current state, brings interfaces up or down as needed, applies routes, and refreshes dependent services such as resolvers. It strives to apply changes with minimal disruption.

Backends and integration: the component typically delegates to kernel interfaces via netlink or iproute2, and may coordinate with existing backends such as NetworkManager, systemd-networkd, or netplan. It exposes a command interface or API for inspection, validation, and manual reconfiguration.

Security and reliability: access to configuration data is guarded, inputs are validated, and changes are logged for auditing and troubleshooting. Support for rollback and staged deployments is common to reduce misconfiguration risk.

See also: Network configuration, network manager, netplan, systemd-networkd, ifupdown.