[  515.339943] bond0: (slave eth0): making interface the new active one
[  515.340017] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.601318] bond0: (slave eth0): Releasing backup interface
[  519.725745] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.962147] bond0: (slave eth0): Releasing backup interface
[  523.985044] bond0 (unregistering): Released all slaves