[  517.115120] bond0: (slave eth0): making interface the new active one
[  517.115210] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.292698] bond0: (slave eth0): Releasing backup interface
[  521.362357] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.523049] bond0: (slave eth0): Releasing backup interface
[  525.554068] bond0 (unregistering): Released all slaves