[  513.669616] bond0: (slave eth0): making interface the new active one
[  513.669708] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.909265] bond0: (slave eth0): Releasing backup interface
[  518.030262] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.207645] bond0: (slave eth0): Releasing backup interface
[  522.237994] bond0 (unregistering): Released all slaves