[  513.255261] bond0: (slave eth0): making interface the new active one
[  513.255345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.469034] bond0: (slave eth0): Releasing backup interface
[  517.594132] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.813018] bond0: (slave eth0): Releasing backup interface
[  521.851046] bond0 (unregistering): Released all slaves