[  512.392506] bond0: (slave eth0): making interface the new active one
[  512.392693] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.637056] bond0: (slave eth0): Releasing backup interface
[  516.741059] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.917923] bond0: (slave eth0): Releasing backup interface
[  520.943880] bond0 (unregistering): Released all slaves