[  515.192024] bond0: (slave eth0): making interface the new active one
[  515.192104] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.386638] bond0: (slave eth0): Releasing backup interface
[  519.489419] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.673997] bond0: (slave eth0): Releasing backup interface
[  523.697952] bond0 (unregistering): Released all slaves