Two devices (xavier nx) are connected to the same PC via a network cable, and transmit a small amount of data.After five or six days of measurement, Xavier NX eth0 reported an anomaly at the same time.The information for one of the devices is as follows：
Dec 24 10:43:44 tegra-ubuntu kernel: [514835.264882] nvethernet 2490000.ethernet eth0: Link is Down
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.1176] device (eth0): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.1525] manager: NetworkManager state is now DISCONNECTED
Dec 24 10:43:50 tegra-ubuntu dbus-daemon[371]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.3' (uid=0 pid=381 comm="/usr/sbin/NetworkManager --no-daemon " label="kernel")
Dec 24 10:43:50 tegra-ubuntu systemd[1]: Starting Network Manager Script Dispatcher Service...
Dec 24 10:43:50 tegra-ubuntu dbus-daemon[371]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Dec 24 10:43:50 tegra-ubuntu systemd[1]: Started Network Manager Script Dispatcher Service.
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2570] device (eth0): carrier: link connected
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2581] device (eth0): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu kernel: [514841.409014] nvethernet 2490000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2614] policy: auto-activating connection 'netplan-eth0' (626dd384-8b3d-3690-9511-192b2c79b3fd)
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2638] device (eth0): Activation: starting connection 'netplan-eth0' (626dd384-8b3d-3690-9511-192b2c79b3fd)
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2644] device (eth0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2663] manager: NetworkManager state is now CONNECTING
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2684] device (eth0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2708] device (eth0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2760] device (eth0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2837] device (eth0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2850] device (eth0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2870] manager: NetworkManager state is now CONNECTED_LOCAL
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2924] manager: NetworkManager state is now CONNECTED_SITE
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2930] policy: set 'netplan-eth0' (eth0) as default for IPv4 routing and DNS
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2950] device (eth0): Activation: successful, device activated.
Dec 24 10:43:50 tegra-ubuntu NetworkManager[381]: <info> [1703414630.2978] manager: NetworkManager state is now CONNECTED_GLOBAL
Dec 24 10:44:00 tegra-ubuntu systemd[1]: NetworkManager-dispatcher.service: Succeeded.
Dec 24 10:44:16 tegra-ubuntu kernel: [514868.032881] nvethernet 2490000.ethernet eth0: Link is Down
Dec 24 10:44:19 tegra-ubuntu NetworkManager[381]: <info> [1703414659.9530] device (eth0): carrier: link connected
Dec 24 10:44:19 tegra-ubuntu kernel: [514871.104995] nvethernet 2490000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx