[  523.274948] bond0: (slave eth0): making interface the new active one
[  523.275078] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.440821] bond0: (slave eth0): Releasing backup interface
[  527.532820] bond0: (slave eth0): Enslaving as an active interface with an up link
[  531.736352] bond0: (slave eth0): Releasing backup interface