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All the network interface cards described in this chapter export a collection of kernel statistics information. In the previous sections describing individual network interfaces, we described kernel statistics that are unique to each interface. This section describes the kernel statistics common to all interfaces. You can use either the kstat(1M) utility or the netstat(1M) utility to gather statistics about each interface. In many cases, these statistics help establish whether packets are moving properly through the interfaces or whether the interface is in a state that will even allow packets to be communicated properly.
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