[  519.009804] bond0: (slave eth0): making interface the new active one
[  519.009903] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.225556] bond0: (slave eth0): Releasing backup interface
[  523.335986] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.515776] bond0: (slave eth0): Releasing backup interface
[  527.540627] bond0 (unregistering): Released all slaves