переодически отваливается link у сетевого интерфейса eth0

[IchEsseDichAuf]

привет, в логах странное поведение eth0 интерфейса, куда копать?

то, что интерфейс отваливается не ощутимо, все соединения не успевают умереть,
так что обнаружил случайно. такое поведение прослеживается весь этот месяц.

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Aug 14 20:18:19 hatemashine kernel: [   58.990008] eth0: no IPv6 routers present
Aug 14 20:18:22 hatemashine kernel: [   61.863614] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:18:24 hatemashine kernel: [   63.380847] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:18:38 hatemashine kernel: [   77.461844] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:18:39 hatemashine kernel: [   78.978923] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:18:54 hatemashine kernel: [   93.059522] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:18:55 hatemashine kernel: [   94.582187] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:19:09 hatemashine kernel: [  108.657472] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:19:11 hatemashine kernel: [  110.182856] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:19:25 hatemashine kernel: [  124.255424] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:19:26 hatemashine kernel: [  125.780950] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:19:40 hatemashine kernel: [  139.853374] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:19:42 hatemashine kernel: [  141.384203] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:19:56 hatemashine kernel: [  155.451597] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:19:57 hatemashine kernel: [  156.982277] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:20:12 hatemashine kernel: [  171.049270] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:20:13 hatemashine kernel: [  172.585543] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:20:27 hatemashine kernel: [  186.647217] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:20:29 hatemashine kernel: [  188.186217] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:20:43 hatemashine kernel: [  202.245164] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:20:44 hatemashine kernel: [  203.784294] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:20:58 hatemashine kernel: [  217.843111] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:21:00 hatemashine kernel: [  219.387560] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:21:14 hatemashine kernel: [  233.441334] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:21:15 hatemashine kernel: [  234.988233] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:21:30 hatemashine kernel: [  249.039005] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:21:31 hatemashine kernel: [  250.586311] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duplex
Aug 14 20:21:45 hatemashine kernel: [  264.636950] atl1 0000:02:00.0: eth0 link is down
Aug 14 20:21:47 hatemashine kernel: [  266.189578] atl1 0000:02:00.0: eth0 link is up 100 Mbps full duple


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Aug 14 20:18:19 hatemashine rtkit-daemon[1959]: Sucessfully made thread 2173 of process 2173 (n/a) owned by '1000' high priority at nice level -11.
Aug 14 20:18:19 hatemashine rtkit-daemon[1959]: Supervising 2 threads of 2 processes of 1 users.
Aug 14 20:18:19 hatemashine rtkit-daemon[1959]: Sucessfully made thread 2174 of process 2174 (n/a) owned by '1000' high priority at nice level -11.
Aug 14 20:18:19 hatemashine rtkit-daemon[1959]: Supervising 2 threads of 2 processes of 1 users.
Aug 14 20:18:22 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:18:24 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:18:38 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:18:39 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:18:54 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:18:55 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:19:09 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:19:11 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:19:22 hatemashine AptDaemon: INFO: Initializing daemon
Aug 14 20:19:25 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:19:26 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:19:40 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:19:42 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:19:56 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:19:57 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:20:12 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:20:13 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)
Aug 14 20:20:27 hatemashine NetworkManager: <info>  (eth0): carrier now OFF (device state 8, deferring action for 4 seconds)
Aug 14 20:20:29 hatemashine NetworkManager: <info>  (eth0): carrier now ON (device state 8)


последняя строчка в dmesg

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[   46.962502] ADDRCONF(NETDEV_UP): eth0: link is not ready


[AnrDaemon]

Кабель, розетки, сетевая, то, во что всё это воткнуто.
Проверяйте.

[IchEsseDichAuf]

чтож возможно действительно что то из этого. перезапустил компьютер windows систему, там точно такая же история, отваливается линк. пошевелил провод и подключился к другой розетки роутера -- и вроде полёт нормальный.

[AnrDaemon]

Я бы переобжал концы, если патчкорд не покупной.