[  519.391109] bond0: (slave eth0): making interface the new active one
[  519.391187] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.600273] bond0: (slave eth0): Releasing backup interface
[  523.683745] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.829969] bond0: (slave eth0): Releasing backup interface
[  527.866956] bond0 (unregistering): Released all slaves