[  520.070562] bond0: (slave eth0): making interface the new active one
[  520.070635] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.236210] bond0: (slave eth0): Releasing backup interface
[  524.305600] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.463165] bond0: (slave eth0): Releasing backup interface
[  528.492119] bond0 (unregistering): Released all slaves