[  515.187135] bond0: (slave eth0): making interface the new active one
[  515.187231] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.397427] bond0: (slave eth0): Releasing backup interface
[  519.475921] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.622514] bond0: (slave eth0): Releasing backup interface
[  523.652549] bond0 (unregistering): Released all slaves