dmesg log after the bug:

[11919.567929] NETDEV WATCHDOG: eth1: transmit timed out
[11919.567936] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=63.
[11919.967551] NETDEV WATCHDOG: eth1: transmit timed out
[11919.967560] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=88.
[11920.566983] NETDEV WATCHDOG: eth1: transmit timed out
[11920.566996] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=88.
[11920.966603] NETDEV WATCHDOG: eth1: transmit timed out
[11920.966613] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=77.
[11921.765843] NETDEV WATCHDOG: eth1: transmit timed out
[11921.765853] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=88.
[11922.165467] NETDEV WATCHDOG: eth1: transmit timed out
[11922.165479] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=62.
[11922.964704] NETDEV WATCHDOG: eth1: transmit timed out
[11922.964713] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=87.
[11924.163563] NETDEV WATCHDOG: eth1: transmit timed out
[11924.163571] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=88.
[11925.162617] NETDEV WATCHDOG: eth1: transmit timed out
[11925.162628] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=77.
[11928.759198] NETDEV WATCHDOG: eth1: transmit timed out
[11928.759208] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=96.
[11929.558438] NETDEV WATCHDOG: eth1: transmit timed out
[11929.558448] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=57.
[11931.156919] NETDEV WATCHDOG: eth1: transmit timed out
[11931.156930] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=80.
[11931.756352] NETDEV WATCHDOG: eth1: transmit timed out
[11931.756362] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=96.
[11937.550849] NETDEV WATCHDOG: eth1: transmit timed out
[11937.550859] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=315.
[11938.549894] NETDEV WATCHDOG: eth1: transmit timed out
[11938.549904] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=88.
[11939.548945] NETDEV WATCHDOG: eth1: transmit timed out
[11939.548955] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=65.
[11942.346287] NETDEV WATCHDOG: eth1: transmit timed out
[11942.346296] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=265.
[11943.345340] NETDEV WATCHDOG: eth1: transmit timed out
[11943.345351] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=154.
[11946.342490] NETDEV WATCHDOG: eth1: transmit timed out
[11946.342501] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=264.
[11948.340596] NETDEV WATCHDOG: eth1: transmit timed out
[11948.340606] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=264.
[11950.338692] NETDEV WATCHDOG: eth1: transmit timed out
[11950.338702] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=263.
[11954.934329] NETDEV WATCHDOG: eth1: transmit timed out
[11954.934340] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=281.
[11957.531859] NETDEV WATCHDOG: eth1: transmit timed out
[11957.531867] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=431.
[11959.529963] NETDEV WATCHDOG: eth1: transmit timed out
[11959.529976] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=287.
[11964.924841] NETDEV WATCHDOG: eth1: transmit timed out
[11964.924851] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=281.
[11968.921042] NETDEV WATCHDOG: eth1: transmit timed out
[11968.921052] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=781.
[11970.919144] NETDEV WATCHDOG: eth1: transmit timed out
[11970.919155] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=281.
[11974.915346] NETDEV WATCHDOG: eth1: transmit timed out
[11974.915356] eth1: Tx timed out, lost interrupt? TSR=0x3, ISR=0x3, t=281.