[  519.762099] bond0: (slave eth0): making interface the new active one
[  519.762191] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.912164] bond0: (slave eth0): Releasing backup interface
[  523.980572] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.143291] bond0: (slave eth0): Releasing backup interface
[  528.175190] bond0 (unregistering): Released all slaves