[  538.544447] bond0: (slave eth0): making interface the new active one
[  538.544545] bond0: (slave eth0): Enslaving as an active interface with an up link
[  542.735734] bond0: (slave eth0): Releasing backup interface
[  542.830056] bond0: (slave eth0): Enslaving as an active interface with an up link
[  547.024828] bond0: (slave eth0): Releasing backup interface
[  547.053703] bond0 (unregistering): Released all slaves