[Resolved]kernel Update issuse(CentOs7): When updated kernel from a old version, the network card driver need update too.
use "#lspci --nn | grep -i net" to check matched driver(http://elrepo.org/tiki/DeviceIDs)
use "#lspci --nn | grep -i net" to check matched driver(http://elrepo.org/tiki/DeviceIDs)
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