[  519.209320] bond0: (slave eth0): making interface the new active one
[  519.209413] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.404999] bond0: (slave eth0): Releasing backup interface
[  523.465622] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.633537] bond0: (slave eth0): Releasing backup interface
[  527.659495] bond0 (unregistering): Released all slaves