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.
This page is part of the libpcap (packet capture library) project.
Information about the project can be found at
⟨http://www.tcpdump.org/⟩. If you have a bug report for this manual
page, see ⟨http://www.tcpdump.org/#patches⟩. This page was obtained
from the project's upstream Git repository
⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2017-04-25. If
you discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information in
this COLOPHON (which is not part of the original manual page), send a
mail to firstname.lastname@example.org
3 January 2014 PCAP_LOOKUPDEV(3PCAP)