[  517.909185] bond0: (slave eth0): making interface the new active one
[  517.909285] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.069557] bond0: (slave eth0): Releasing backup interface
[  522.151588] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.288274] bond0: (slave eth0): Releasing backup interface
[  526.321112] bond0 (unregistering): Released all slaves