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, PCAP_ERROR_NOT_ACTIVATED if
     called on a capture handle that has been created but not activated, or
     PCAP_ERROR on other errors. 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)

                                 5 March 2022             PCAP_SET_DATALINK(3)