dmesg中的信息，這段表示什麼意思?

misfans

是我的網卡出了什麼問題嗎?
很多以下信息：
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eth0: Tigon3 [partno(BCM95703A30) rev 1002 PHY(5703)] (PCIX:100MHz:64-bit) 10/10
0/1000BaseT Ethernet 00:09:6b:a5:24:43
eth0: Link is up at 100 Mbps, full duplex.
eth0: Flow control is off for TX and off for RX.
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
eth0: Link is down.
eth0: Link is up at 100 Mbps, full duplex.
eth0: Flow control is off for TX and off for RX.
eth0: Link is down.
eth0: Link is up at 100 Mbps, full duplex.
eth0: Flow control is off for TX and off for RX.
eth0: Link is down.

謝謝