[  511.818398] bond0: (slave eth0): making interface the new active one
[  511.818487] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.978919] bond0: (slave eth0): Releasing backup interface
[  516.050337] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.212576] bond0: (slave eth0): Releasing backup interface
[  520.235539] bond0 (unregistering): Released all slaves