[  516.091793] bond0: (slave eth0): making interface the new active one
[  516.091928] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.281935] bond0: (slave eth0): Releasing backup interface
[  520.353149] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.508296] bond0: (slave eth0): Releasing backup interface
[  524.551242] bond0 (unregistering): Released all slaves