Unfortunetaly, on L2 all messages are sending to all members of the cluster.

unicast:	dst_node_id == node_id
broadcast:	dst_node_id == NOID

session example of two nodes (A and B):

A appears

A -> getmyid	(serial: 0;	src: NOID	; dst: NOID;	name: A)
A -> register	(serial: 1;	src: 0		; dst: NOID;	name: A)

B appers

B -> getmyid	(serial: 0;	src: NOID	; dst: NOID;	name: B)
A -> setid	(serial: 2;	src: 0		; dst: NOID;	name: A;	updatets: 100)
B -> register	(serial: 1;	src: 1		: dst: NOID;	name: B)
A -> ack	(serial: 3;	src: 0		; dst: 1;	ack_serial: 1)
A -> lock	(serial: 4:	src: 0		; dst: NOID;	[paths list])
B -> ack	(serial: 2;	src: 1		; dst: 0;	ack_serial: 4)
A -> unlock_all	(serial: 5:	src: 0		; dst: NOID)
B -> ack	(serial: 3;	src: 1		; dst: 0;	ack_serial: 5)

A disappers (shutdown)
A appears

A -> getmyid	(serial: 0;	src: NOID	; dst: NOID;	name: A)
B -> setid	(serial: 4;	src: 1		; dst: 0;	name: A;	updatets: 200)
A -> register	(serial: 1;	src: 0		; dst: NOID;	name: A)
B -> ack	(serial: 5;	src: 1		; dst: 0;	ack_serial: 1)

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