#ifndef arpH
#define arpH


struct ARP_header {
  unsigned char Opcode;
  unsigned char ARP_sourceMac[6];
  unsigned char ARP_sourceIp[4];
  unsigned char ARP_destMac[6];
  unsigned char ARP_destIp[4];
};


// ARP opcodes
#define OP_REQUEST 1
#define OP_REPLY 2


// FUNCTION
extern void arp (unsigned int len, unsigned char *buff);

unsigned char Check_my_ip_arp (void);


#endif