установить неразборчивый режим для еще не активированного дескриптора захвата  (set promiscuous mode for a not-yet-activated capture handle)
  
Имя (Name)
pcap_set_promisc - set promiscuous mode for a not-yet-activated
       capture handle
Синопсис (Synopsis)
#include <pcap/pcap.h>
       int pcap_set_promisc(pcap_t *p, int promisc);
Описание (Description)
pcap_set_promisc() sets whether promiscuous mode should be set on
       a capture handle when the handle is activated.  If promisc is
       non-zero, promiscuous mode will be set, otherwise it will not be
       set.
Возвращаемое значение (Return value)
pcap_set_promisc() returns 0 on success or PCAP_ERROR_ACTIVATED
       if called on a capture handle that has been activated.
Смотри также (See also)
pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP)