[  515.462947] bond0: (slave eth0): making interface the new active one
[  515.463019] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.705263] bond0: (slave eth0): Releasing backup interface
[  519.824186] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.991217] bond0: (slave eth0): Releasing backup interface
[  524.030191] bond0 (unregistering): Released all slaves