[  512.012109] bond0: (slave eth0): making interface the new active one
[  512.012195] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.251579] bond0: (slave eth0): Releasing backup interface
[  516.351903] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.538105] bond0: (slave eth0): Releasing backup interface
[  520.576032] bond0 (unregistering): Released all slaves