[  512.099427] bond0: (slave eth0): making interface the new active one
[  512.099512] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.312322] bond0: (slave eth0): Releasing backup interface
[  516.426575] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.602968] bond0: (slave eth0): Releasing backup interface
[  520.634015] bond0 (unregistering): Released all slaves