Rocky Linux：嘗試變更網路介面內容時發生「未知屬性」錯誤

當系統管理員嘗試使用 nmtui，則會顯示以下錯誤：

"Unable to save connection: connection.autoconnect-ports: unknown property"

以下是嘗試使用 nmcli：

[root@localhost pcap]# nmcli connection modify BCM57414-IntNIC1-P1-25Gb 802-3-ethernet.mtu 1500
Warning: nmcli (1.46.0) and NetworkManager (1.44.0) versions don't match. Restarting NetworkManager is advised.
Error: Failed to modify connection 'BCM57414-IntNIC1-P1-25Gb': connection.autoconnect-ports: unknown property

[root@localhost pcap]# nmcli connection modify BCM57414-IntNIC1-P1-25Gb 802-3-ethernet.mtu 9000
Warning: nmcli (1.46.0) and NetworkManager (1.44.0) versions don't match. Restarting NetworkManager is advised.
Error: Failed to modify connection 'BCM57414-IntNIC1-P1-25Gb': connection.autoconnect-ports: unknown property

在此示例中，管理員嘗試更改介面的 MTU，但在嘗試更改另一個屬性時會發生相同的錯誤。

原因尚不清楚。由於某種原因，網路管理器指示版本不匹配。

1. 查 NetworkManager 和 nmcli 版本：確認是否 NetworkManager 和 nmcli 版本匹配。在下面的範例中，版本匹配：

   [root@localhost pcap]# rpm -qa | grep NetworkManager
   NetworkManager-libnm-1.46.0-4.el9_4.x86_64
   NetworkManager-1.46.0-4.el9_4.x86_64
   NetworkManager-wwan-1.46.0-4.el9_4.x86_64
   NetworkManager-team-1.46.0-4.el9_4.x86_64
   NetworkManager-wifi-1.46.0-4.el9_4.x86_64
   NetworkManager-bluetooth-1.46.0-4.el9_4.x86_64
   NetworkManager-adsl-1.46.0-4.el9_4.x86_64
   NetworkManager-tui-1.46.0-4.el9_4.x86_64
   NetworkManager-config-server-1.46.0-4.el9_4.noarch

2. 重新啟動 NetworkManager：重新啟動 NetworkManager 服務可能會解決此問題：

   [root@localhost pcap]# systemctl restart NetworkManager

3. 驗證設定：重新啟動後，請檢查變更的設定是否已正確套用：

   [root@localhost pcap]# nmcli connection show BCM57414-IntNIC1-P1-25Gb | grep 802-3-ethernet.mtu
   802-3-ethernet.mtu:                     9000
   [root@localhost pcap]# nmcli connection show BCM57414-IntNIC1-P2-25Gb | grep 802-3-ethernet.mtu
   802-3-ethernet.mtu:                     9000

4. 關閉再上連接埠以套用新組態：

   [root@localhost pcap]# nmcli con down BCM57414-IntNIC1-P1-25Gb && nmcli con up BCM57414-IntNIC1-P1-25Gb
   Connection 'BCM57414-IntNIC1-P1-25Gb' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2)
   Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/17)
   
   [root@localhost pcap]# nmcli con down BCM57414-IntNIC1-P2-25Gb && nmcli con up BCM57414-IntNIC1-P2-25Gb
   Connection 'BCM57414-IntNIC1-P2-25Gb' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/3)
   Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/18)

5. 測試連線能力：在此範例中，系統管理員變更了 MTU 設定，並執行了 ping 測試，以確認 MTU 的連線能力和正確應用：

   [root@localhost pcap]# ping 192.168.15.10 -s8972 -c4
   PING 192.168.15.10 (192.168.15.10) 8972(9000) bytes of data.
   8980 bytes from 192.168.15.10: icmp_seq=1 ttl=64 time=0.287 ms
   8980 bytes from 192.168.15.10: icmp_seq=2 ttl=64 time=0.136 ms
   8980 bytes from 192.168.15.10: icmp_seq=3 ttl=64 time=0.125 ms
   8980 bytes from 192.168.15.10: icmp_seq=4 ttl=64 time=0.135 ms

有關網路配置的更多詳細資訊，請參閱官方 Rocky Linux 文檔：網路組態 - 說明文件