Definition of Done: Please mark each item below with ( / ) if completed or ( x ) if incomplete: ( ) The acceptance criteria defined below are met. Given Interface eth1 exists with primary name 'eth1' and alt-names ['port1', 'longlongalt-name'] and interface eth2 exists with primary name 'port1' (no alt-names), When a sysadmin applies state with: interfaces: - name: longlongalt-name state: up ipv4: enabled: false interfaces: - name: port1 state: up interfaces: - name: eth1 state: up Then, nmstate resolves names correctly: 'longlongalt-name' with eth1, 'port1' with eth2 (primary precedence), 'eth1' with eth1, applies configuration successfully, and nmstatectl show <interface> reflects the applied state with exit code 0 — Given interface eth1 exists with primary name 'eth1' and alt-names ['port1'] and interface eth2 exists with primary name 'eth2' and alt-names ['port1'] and no interface named 'nonexistent' exists and no alt-name 'nonexistent' exists, When a sysadmin applies state with: interfaces: - name: port1 state: up interfaces: - name: nonexistent, state: up Then nmstate exits with code 1 and error message indicating: For 'port1': alt-name is ambiguous (used by multiple interfaces: eth1 and eth2) For 'nonexistent': interface not found by name or alt-name ( ) Integration test case is available upstream. ( ) Code is reviewed and merged upstream. ( ) Preliminary testing is done. ( ) Upstream documentation is written in the upstream MR. ( ) Release notes text is written in the RHEL issue. ( ) A demo is recorded