[  516.815976] bond0: (slave eth0): making interface the new active one
[  516.816099] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.980560] bond0: (slave eth0): Releasing backup interface
[  521.060552] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.202224] bond0: (slave eth0): Releasing backup interface
[  525.230192] bond0 (unregistering): Released all slaves