[  515.300615] bond0: (slave eth0): making interface the new active one
[  515.300845] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.511487] bond0: (slave eth0): Releasing backup interface
[  519.617574] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.792902] bond0: (slave eth0): Releasing backup interface
[  523.816879] bond0 (unregistering): Released all slaves