[  503.871954] bond0: (slave eth0): making interface the new active one
[  503.872069] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.041359] bond0: (slave eth0): Releasing backup interface
[  508.109281] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.262330] bond0: (slave eth0): Releasing backup interface
[  512.285199] bond0 (unregistering): Released all slaves