text: #ifndef _PCAP_H
  #define _PCAP_H
  
  #include "stddef.h"
  
  #ifdef DEBUG
  int write_pcap_file(const char* filename, void* pkt, size_t len);
  int write_pcap_filev(const char *filename, struct iovec *pkts, size_t len);
  #endif
  
  #endif
  