[  517.037040] bond0: (slave eth0): making interface the new active one
[  517.037133] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.225608] bond0: (slave eth0): Releasing backup interface
[  521.291490] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.454443] bond0: (slave eth0): Releasing backup interface
[  525.495327] bond0 (unregistering): Released all slaves