[  515.485072] bond0: (slave eth0): making interface the new active one
[  515.485149] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.705078] bond0: (slave eth0): Releasing backup interface
[  519.802945] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.994175] bond0: (slave eth0): Releasing backup interface
[  524.017947] bond0 (unregistering): Released all slaves