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That observation checks A corporate client must send DNS queries to a new resolver persistently under NetworkManager. In this scenario it does not demonstrate Set ipv4.method manual with address/gateway using nmcli connection modify on the correct connection, then activate it.; the relevant evidence must establish nmcli connection show reports the saved manual IPv4 settings and the interface retains the address after restart.

That observation checks A workstation Wi-Fi profile must join a secured SSID automatically after reboot. In this scenario it does not demonstrate Set ipv4.method manual with address/gateway using nmcli connection modify on the correct connection, then activate it.; the relevant evidence must establish nmcli connection show reports the saved manual IPv4 settings and the interface retains the address after restart.

That observation checks A small host uses systemd-networkd, not NetworkManager, for its persistent wired network configuration. In this scenario it does not demonstrate Set ipv4.method manual with address/gateway using nmcli connection modify on the correct connection, then activate it.; the relevant evidence must establish nmcli connection show reports the saved manual IPv4 settings and the interface retains the address after restart.

This fix is aimed at Editing generated /etc/resolv.conf is overwritten when NetworkManager reactivates the connection. and would be relevant if A corporate client must send DNS queries to a new resolver persistently under NetworkManager. The incident instead states An ip addr add command changes only the running interface and disappears at reconnect. and needs Modify the persistent NetworkManager connection profile rather than only the kernel's live interface state.

This fix is aimed at A temporary hostname command succeeds but the name reverts after reboot. and would be relevant if The system's static hostname must survive reboot and be reported consistently to utilities. The incident instead states An ip addr add command changes only the running interface and disappears at reconnect. and needs Modify the persistent NetworkManager connection profile rather than only the kernel's live interface state.

This fix is aimed at The configured DNS server is reachable but a short hostname fails without its expected search suffix. and would be relevant if A machine must use a stable DNS search domain for unqualified internal hostnames under NetworkManager. The incident instead states An ip addr add command changes only the running interface and disappears at reconnect. and needs Modify the persistent NetworkManager connection profile rather than only the kernel's live interface state.

Add the entry in /etc/hosts and confirm the hosts source precedes DNS in nsswitch.conf. That operation is designed for the different case: A local application must resolve a special test hostname to a fixed IP before public DNS lookup according to host resolution policy. It does not perform the specific action required here: Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.

Use hostnamectl set-hostname newname on a systemd host. That operation is designed for the different case: The system's static hostname must survive reboot and be reported consistently to utilities. It does not perform the specific action required here: Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.

Ensure the hosts line in /etc/nsswitch.conf orders files before dns as appropriate. That operation is designed for the different case: A host must consult local files before DNS for resolving service hostnames. It does not perform the specific action required here: Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.

This explains another Linux operation, namely Configure a matching .network file under /etc/systemd/network/ and reload/reconfigure systemd-networkd., where systemd-networkd reads .network units for interfaces it manages; NetworkManager profile changes may not affect such a host. It does not explain why Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties. satisfies the stated condition.

This explains another Linux operation, namely Run nmcli connection show --active and compare with nmcli connection show., where The active-only view lists activated profiles, which can differ from saved profiles on the system. It does not explain why Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties. satisfies the stated condition.

This explains another Linux operation, namely Set ipv4.dns-search for the correct connection profile and validate resolver behavior., where Resolver search domains append configured suffixes to eligible relative hostnames; they are separate from DNS server IPs. It does not explain why Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties. satisfies the stated condition.

That observation checks A corporate client must send DNS queries to a new resolver persistently under NetworkManager. In this scenario it does not demonstrate Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.; the relevant evidence must establish The workstation reconnects automatically to the authorized SSID after reboot.

That observation checks A local application must resolve a special test hostname to a fixed IP before public DNS lookup according to host resolution policy. In this scenario it does not demonstrate Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.; the relevant evidence must establish The workstation reconnects automatically to the authorized SSID after reboot.

That observation checks A network interface has two saved profiles with different IPv4 settings; production uses the wrong profile on boot. In this scenario it does not demonstrate Configure a NetworkManager Wi-Fi connection with the correct SSID, security and autoconnect properties.; the relevant evidence must establish The workstation reconnects automatically to the authorized SSID after reboot.

This fix is aimed at A temporary hostname command succeeds but the name reverts after reboot. and would be relevant if The system's static hostname must survive reboot and be reported consistently to utilities. The incident instead states Only a manual iw scan was performed; no saved connection was created. and needs Create or edit a persistent authenticated Wi-Fi profile and enable autoconnect.

This fix is aimed at An ip addr add command changes only the running interface and disappears at reconnect. and would be relevant if A NetworkManager-managed Ethernet connection must retain its static IPv4 address after restart. The incident instead states Only a manual iw scan was performed; no saved connection was created. and needs Create or edit a persistent authenticated Wi-Fi profile and enable autoconnect.

This fix is aimed at The configured DNS server is reachable but a short hostname fails without its expected search suffix. and would be relevant if A machine must use a stable DNS search domain for unqualified internal hostnames under NetworkManager. The incident instead states Only a manual iw scan was performed; no saved connection was created. and needs Create or edit a persistent authenticated Wi-Fi profile and enable autoconnect.

Adjust the correct NetworkManager connection's autoconnect behavior and priority, then activate it. That operation is designed for the different case: A network interface has two saved profiles with different IPv4 settings; production uses the wrong profile on boot. It does not perform the specific action required here: Use hostnamectl set-hostname newname on a systemd host.

Ensure the hosts line in /etc/nsswitch.conf orders files before dns as appropriate. That operation is designed for the different case: A host must consult local files before DNS for resolving service hostnames. It does not perform the specific action required here: Use hostnamectl set-hostname newname on a systemd host.

Set ipv4.dns on the appropriate NetworkManager connection profile and reactivate it. That operation is designed for the different case: A corporate client must send DNS queries to a new resolver persistently under NetworkManager. It does not perform the specific action required here: Use hostnamectl set-hostname newname on a systemd host.

This explains another Linux operation, namely Run nmcli connection show --active and compare with nmcli connection show., where The active-only view lists activated profiles, which can differ from saved profiles on the system. It does not explain why Use hostnamectl set-hostname newname on a systemd host. satisfies the stated condition.

This explains another Linux operation, namely Add the entry in /etc/hosts and confirm the hosts source precedes DNS in nsswitch.conf., where The hosts database provides explicit local name-to-address mappings consulted by the resolver per NSS order. It does not explain why Use hostnamectl set-hostname newname on a systemd host. satisfies the stated condition.

This explains another Linux operation, namely Set ipv4.dns-search for the correct connection profile and validate resolver behavior., where Resolver search domains append configured suffixes to eligible relative hostnames; they are separate from DNS server IPs. It does not explain why Use hostnamectl set-hostname newname on a systemd host. satisfies the stated condition.

That observation checks A host must consult local files before DNS for resolving service hostnames. In this scenario it does not demonstrate Use hostnamectl set-hostname newname on a systemd host.; the relevant evidence must establish hostnamectl status reports the new static hostname after restart.

That observation checks A workstation Wi-Fi profile must join a secured SSID automatically after reboot. In this scenario it does not demonstrate Use hostnamectl set-hostname newname on a systemd host.; the relevant evidence must establish hostnamectl status reports the new static hostname after restart.

That observation checks A network interface has two saved profiles with different IPv4 settings; production uses the wrong profile on boot. In this scenario it does not demonstrate Use hostnamectl set-hostname newname on a systemd host.; the relevant evidence must establish hostnamectl status reports the new static hostname after restart.

This fix is aimed at NSS is configured dns files and unexpectedly ignores the desired local override. and would be relevant if A host must consult local files before DNS for resolving service hostnames. The incident instead states A temporary hostname command succeeds but the name reverts after reboot. and needs Persist the hostname through hostnamectl or the distribution's hostname configuration.

This fix is aimed at An nmcli command edits a nonexistent or unmanaged profile, leaving the interface unchanged. and would be relevant if A small host uses systemd-networkd, not NetworkManager, for its persistent wired network configuration. The incident instead states A temporary hostname command succeeds but the name reverts after reboot. and needs Persist the hostname through hostnamectl or the distribution's hostname configuration.

This fix is aimed at The operator edits an inactive duplicate profile while the active one retains wrong settings. and would be relevant if An operator needs to inspect all NetworkManager connection profiles and identify which one is active. The incident instead states A temporary hostname command succeeds but the name reverts after reboot. and needs Persist the hostname through hostnamectl or the distribution's hostname configuration.

Set ipv4.dns on the appropriate NetworkManager connection profile and reactivate it. That operation is designed for the different case: A corporate client must send DNS queries to a new resolver persistently under NetworkManager. It does not perform the specific action required here: Add the entry in /etc/hosts and confirm the hosts source precedes DNS in nsswitch.conf.

Use hostnamectl set-hostname newname on a systemd host. That operation is designed for the different case: The system's static hostname must survive reboot and be reported consistently to utilities. It does not perform the specific action required here: Add the entry in /etc/hosts and confirm the hosts source precedes DNS in nsswitch.conf.

Ensure the hosts line in /etc/nsswitch.conf orders files before dns as appropriate. That operation is designed for the different case: A host must consult local files before DNS for resolving service hostnames. It does not perform the specific action required here: Add the entry in /etc/hosts and confirm the hosts source precedes DNS in nsswitch.conf.