[  515.339156] bond0: (slave eth0): making interface the new active one
[  515.339226] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.590301] bond0: (slave eth0): Releasing backup interface
[  519.714983] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.941128] bond0: (slave eth0): Releasing backup interface
[  523.969048] bond0 (unregistering): Released all slaves