[  519.077972] bond0: (slave eth0): making interface the new active one
[  519.078039] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.276456] bond0: (slave eth0): Releasing backup interface
[  523.339647] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.502287] bond0: (slave eth0): Releasing backup interface
[  527.529982] bond0 (unregistering): Released all slaves