freebsd man page for pcap_set_datalink

PCAP_SET_DATALINK(3)					     Library Functions Manual					      PCAP_SET_DATALINK(3)

NAME
       pcap_set_datalink - set the link-layer header type to be used by a capture device

SYNOPSIS
       #include <pcap/pcap.h>

       int pcap_set_datalink(pcap_t *p, int dlt);

DESCRIPTION
       pcap_set_datalink() is used to set the current link-layer header type of the pcap descriptor to the type specified by dlt.

RETURN VALUE
       pcap_set_datalink()  returns  0 on success and -1 on failure.  If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an
       argument to fetch or display the error text.

SEE ALSO
       pcap(3), pcap_geterr(3), pcap_datalink_name_to_val(3)

								  22 August 2010					      PCAP_SET_DATALINK(3)