[  516.025181] bond0: (slave eth0): making interface the new active one
[  516.025268] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.211189] bond0: (slave eth0): Releasing backup interface
[  520.287297] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.435265] bond0: (slave eth0): Releasing backup interface
[  524.473234] bond0 (unregistering): Released all slaves