[  512.144622] bond0: (slave eth0): making interface the new active one
[  512.144707] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.375555] bond0: (slave eth0): Releasing backup interface
[  516.466472] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.657947] bond0: (slave eth0): Releasing backup interface
[  520.678891] bond0 (unregistering): Released all slaves