[  515.494350] bond0: (slave eth0): making interface the new active one
[  515.494441] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.711666] bond0: (slave eth0): Releasing backup interface
[  519.830843] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.062924] bond0: (slave eth0): Releasing backup interface
[  524.095911] bond0 (unregistering): Released all slaves