#include <stdio.h>

#include<pcap.h>

typedef struct MAC_header

{

unsigned char D[6];

unsigned char s[6];

unsigned short type;

} MAC_header;

void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data);

int main(int argc,char *argv[])

{

char *device;

char errbuf[PCAP_ERRBUF_SIZE];

pcap_t *p;

device=pcap_lookupdev(errbuf);

p=pcap_open_live(device,65536,1,1000,errbuf);

pcap_loop(p,0,packet_handler,NULL);

return(0);

}

void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data)

{

int i;

MAC_header *mac_header;

mac_header=(MAC_header *)pkt_data;

if(mac_header->type==0x0608)

{

printf("PPPOE arp\n");

for(i=0;i<6;i++)

printf("%02x ",pkt_data[i]);

putchar('\n');

for(i=6;i<12;i++)

printf("%02x ",pkt_data[i]);

putchar('\n');

}

}