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PCAP_LOOKUPDEV(3) Library Functions Manual 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) 3 January 2014 PCAP_LOOKUPDEV(3)