[  515.368729] bond0: (slave eth0): making interface the new active one
[  515.368815] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.576081] bond0: (slave eth0): Releasing backup interface
[  519.697915] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.862963] bond0: (slave eth0): Releasing backup interface
[  523.897934] bond0 (unregistering): Released all slaves