[  514.637051] bond0: (slave eth0): making interface the new active one
[  514.637171] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.873299] bond0: (slave eth0): Releasing backup interface
[  518.998640] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.230050] bond0: (slave eth0): Releasing backup interface
[  523.266052] bond0 (unregistering): Released all slaves