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NetBSD 6.1.5 - man page for pcap_create (netbsd section 3)

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PCAP_CREATE(3)									   PCAP_CREATE(3)

       pcap_create - create a live capture handle

       #include <pcap/pcap.h>

       char errbuf[PCAP_ERRBUF_SIZE];

       pcap_t *pcap_create(const char *source, char *errbuf);

       pcap_create() is used to create a packet capture handle to look at packets on the network.
       source is a string that specifies the network device to open; on Linux systems with 2.2 or
       later  kernels, a source argument of "any" or NULL can be used to capture packets from all

       The returned handle must be activated with pcap_activate() before packets can be  captured
       with  it;  options  for	the  capture,  such as promiscuous mode, can be set on the handle
       before activating it.

       pcap_create() returns a pcap_t * on success and NULL on failure.   If  NULL  is	returned,
       errbuf  is  filled  in with an appropriate error message.  errbuf is assumed to be able to
       hold at least PCAP_ERRBUF_SIZE chars.

       pcap(3), pcap_activate(3)

					   5 April 2008 			   PCAP_CREATE(3)
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