[  512.313167] bond0: (slave eth0): making interface the new active one
[  512.313272] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.506264] bond0: (slave eth0): Releasing backup interface
[  516.608591] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.785879] bond0: (slave eth0): Releasing backup interface
[  520.814832] bond0 (unregistering): Released all slaves