[  522.315582] bond0: (slave eth0): making interface the new active one
[  522.315658] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.480254] bond0: (slave eth0): Releasing backup interface
[  526.563290] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.707968] bond0: (slave eth0): Releasing backup interface