[  519.252539] bond0: (slave eth0): making interface the new active one
[  519.252636] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.481268] bond0: (slave eth0): Releasing backup interface
[  523.598105] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.771119] bond0: (slave eth0): Releasing backup interface
[  527.793078] bond0 (unregistering): Released all slaves