bus=1
--->node=2 address=7
--->node=3 address=1
bus=2
--->node=1 address=7
--->node=5 address=5
--->node=4 address=3
--->node=3 address=2
bus=3
--->node=4 address=4
--->node=2 address=2
--->node=1 address=1
bus=4
--->node=5 address=6
--->node=3 address=4
--->node=2 address=3
bus=5
--->node=4 address=6
--->node=2 address=5