PCAP_SET_DATALINK(3)   FreeBSD 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 PCAP_ERROR on failure. If
       PCAP_ERROR is returned, pcap_geterr(3) or pcap_perror(3) may be called
       with p as an argument to fetch or display the error text.

SEE ALSO
       pcap(3), pcap_datalink_name_to_val(3)

                                 25 July 2018             PCAP_SET_DATALINK(3)