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PCAP_CREATE(3)             Library Functions Manual             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)

                                3 January 2014                  PCAP_CREATE(3)