Man page of PCAP_LOOKUPDEV
Section: Misc. Reference Manual Pages (3PCAP)
Updated: 8 September 2017
Return to Main Contents
This man page documents libpcap version 1.11.0-PRE-GIT.
Your system may have a different version installed, possibly with some
local modifications. To achieve the best results, please make sure this
version of this man page suits your needs. If necessary, try to look for
a different version on this web site or in the man pages available in your
pcap_lookupdev - find the default device on which to capture
[DEPRECATED] char *pcap_lookupdev(char *errbuf);
This interface is obsoleted by
To find a default device on which to capture, call
and, if the list it returns is not empty, use the first device in the
list. (If the list is empty, there are no devices on which capture is
has been called, this interface always returns
returns a pointer to a string giving the name of a network device
suitable for use with
If there is an error,
has been called,
is returned and
is filled in with an appropriate error message.
is assumed to be able to hold at least
The pointer returned by
points to a static buffer; subsequent calls to
in the same thread, or calls to
in another thread, may overwrite that buffer.
In WinPcap and Npcap, this function may return a UTF-16 string rather
than an ASCII or UTF-8 string.
This document was created by
using the manual pages from "The Tcpdump Group" git repositories.
Time: 10:43:41 GMT, October 05, 2021
[Valid HTML 4.01]