[  515.565321] bond0: (slave eth0): making interface the new active one
[  515.565410] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.766290] bond0: (slave eth0): Releasing backup interface
[  519.842809] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.001517] bond0: (slave eth0): Releasing backup interface
[  524.039317] bond0 (unregistering): Released all slaves