[  519.489108] bond0: (slave eth0): making interface the new active one
[  519.489202] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.659755] bond0: (slave eth0): Releasing backup interface
[  523.733741] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.886321] bond0: (slave eth0): Releasing backup interface
[  527.912953] bond0 (unregistering): Released all slaves