[  512.714380] bond0: (slave eth0): making interface the new active one
[  512.714450] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.955269] bond0: (slave eth0): Releasing backup interface
[  517.069418] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.249363] bond0: (slave eth0): Releasing backup interface
[  521.282110] bond0 (unregistering): Released all slaves