[  512.556771] bond0: (slave eth0): making interface the new active one
[  512.556849] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.758031] bond0: (slave eth0): Releasing backup interface
[  516.859093] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.045120] bond0: (slave eth0): Releasing backup interface
[  521.078044] bond0 (unregistering): Released all slaves