[  512.305144] bond0: (slave eth0): making interface the new active one
[  512.305224] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.509016] bond0: (slave eth0): Releasing backup interface
[  516.632981] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.857599] bond0: (slave eth0): Releasing backup interface
[  520.887269] bond0 (unregistering): Released all slaves