static
struct bpf_insn BPFAcceptEtherSource[] =
{
	// Hardcoded Source Address: 00.A0.CC.30.57.B7
	// Check Source Ethernet source address High DWORD At Offset 6
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 6),
//	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 3),	//Source == 1.2.3.4
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x00A0CC30, 0, 3),	//Source == 1.2.3.4

	// Check Source Ethernet source address Low WORD At Offset 10
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 10),
//	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x0506, 0, 1),	//Source == 5.6
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x57B7, 0, 1),	//Source == 5.6

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	// Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
};

#define TPF_ETHERSOURCE_PROGLEN	6		// 6 BPF Instructions

static
struct bpf_insn BPFAcceptEtherDest[] =
{
	// Check Source Ethernet destination address High DWORD At Offset 0
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 0),
//	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 3),	//Source == 1.2.3.4
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x00A0CC30, 0, 3),	//Source == 1.2.3.4

	// Check Source Ethernet destination address Low WORD At Offset 4
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 4),
//	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x0506, 0, 1),	//Source == 5.6
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x57B7, 0, 1),	//Source == 5.6

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	// Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
};

#define TPF_ETHERDEST_PROGLEN	6		// 6 BPF Instructions

DWORD TPF_ConcatEtherSource(
			struct bpf_program *pBPFProgram
			)
{
	DWORD nResult;

	nResult = _TPF_BPFProgramAppend(
						pBPFProgram,
						BPFAcceptEtherSource,
						TPF_ETHERSOURCE_PROGLEN
						);

	return( nResult );
}

extern DWORD TPF_ConcatEtherSource(
			struct bpf_program *pBPFProgram
			);

// This filter only accepts IP packets with IP source address
// which is exactly 1.2.3.4.  This address will be altered later by SetIPMine.
static
struct bpf_insn BPFAcceptIPSource[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 3),

	// Check Source IP address At Offset 26
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 26),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 1),	//Source == 1.2.3.4

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	    // Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
returned
};


// Accept Any IP Packet
static
struct bpf_insn BPFAcceptIP[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 1),

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	// Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
};

#define TPF_ACCEPT_IP_PROGLEN	6		// 6 BPF Instructions


// Reject Any IP Packet
static
struct bpf_insn BPFAcceptIP[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 1),

	BPF_STMT(BPF_RET+BPF_K, 0 ),			// Reject
	BPF_STMT(BPF_RET+BPF_K, (UINT)-1)	// Accept. Value is bytes to be
};

// This filter only accepts IP packets with IP dest address
// which is exactly 1.2.3.4.  This address will be altered later by SetIPMine.
static
struct bpf_insn BPFAcceptIPDest[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 3),

	// Check Dest IP address At Offset 30
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 30),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 1),	//Dest == 1.2.3.4

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	    // Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
returned
};


// This filter only accepts IP packets with IP source address 1.2.3.4 or
// dest IP address 5.6.7.8 OR IP source address 5.6.7.8 and IP dest address
// 1.2.3.4. This address will be altered later by SetIPMine.
static
struct bpf_insn BPFAcceptIPPair[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 8),

	// Check Source IP address At Offset 26
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 26),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 1, 0),	//Source == 1.2.3.4
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x05060708, 2, 5),	//Source == 5.6.7.8

	// Check Dest IP address At Offset 30
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 30),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x05060708, 2, 3),	//Dest == 5.6.7.8

	// Check Dest IP address At Offset 30
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 30),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 1),	//Dest == 1.2.3.4

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	    // Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
returned
};

// This filter only accepts IP packets with IP source OR dest address
// which is exactly 1.2.3.4.  This address will be altered later by SetIPMine.
static
struct bpf_insn BPFAcceptIPMine[] =
{
	// Check Ethernet Protocol Word At Offset 12
	BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETHERTYPE_IP, 0, 5),

	// Check Source IP address At Offset 26
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 26),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 2, 0),	//Source == 1.2.3.4

	// Check Dest IP address At Offset 30
	BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 30),
	BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x01020304, 0, 1),	//Dest == 1.2.3.4

	BPF_STMT(BPF_RET+BPF_K, (UINT)-1),	    // Accept. Value is bytes to be
	BPF_STMT(BPF_RET+BPF_K, 0 )			// Reject
returned
};

#define TPF_IPM_PROGLEN	8		// 8 BPF Instructions

void SetIPMine( unsigned int addr ) {
    BPFAcceptIPMine[ 3 ].k = addr;		// Overwrite constant Value
    BPFAcceptIPMine[ 5 ].k = addr;		// Overwrite constant Value
}