[  515.446646] bond0: (slave eth0): making interface the new active one
[  515.446758] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.643761] bond0: (slave eth0): Releasing backup interface
[  519.750329] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.925931] bond0: (slave eth0): Releasing backup interface
[  523.969910] bond0 (unregistering): Released all slaves