pcap_lookupdev man page on PC-BSD

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PCAP_LOOKUPDEV(3)					     PCAP_LOOKUPDEV(3)

NAME
       pcap_lookupdev - find the default device on which to capture

SYNOPSIS
       #include <pcap/pcap.h>

       char errbuf[PCAP_ERRBUF_SIZE];

       char *pcap_lookupdev(char *errbuf);

DESCRIPTION
       pcap_lookupdev()	 returns  a  pointer  to a string giving the name of a
       network device suitable for use with pcap_create() and pcap_activate(),
       or  with	 pcap_open_live(),  and with pcap_lookupnet().	If there is an
       error, NULL is returned and errbuf is filled  in	 with  an  appropriate
       error  message.	 errbuf	 is  assumed  to  be  able  to	hold  at least
       PCAP_ERRBUF_SIZE chars.

SEE ALSO
       pcap(3),	   pcap_create(3),    pcap_activate(3),	    pcap_open_live(3),
       pcap_lookupnet(3)

				 5 April 2008		     PCAP_LOOKUPDEV(3)
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