[  516.638775] bond0: (slave eth0): making interface the new active one
[  516.638874] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.861202] bond0: (slave eth0): Releasing backup interface
[  520.946400] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.136992] bond0: (slave eth0): Releasing backup interface
[  525.173896] bond0 (unregistering): Released all slaves