[  512.834183] bond0: (slave eth0): making interface the new active one
[  512.834276] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.090063] bond0: (slave eth0): Releasing backup interface
[  517.202994] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.369123] bond0: (slave eth0): Releasing backup interface
[  521.392072] bond0 (unregistering): Released all slaves