[  512.360583] bond0: (slave eth0): making interface the new active one
[  512.360709] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.631146] bond0: (slave eth0): Releasing backup interface
[  516.731727] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.921004] bond0: (slave eth0): Releasing backup interface
[  520.942900] bond0 (unregistering): Released all slaves