[  512.560488] bond0: (slave eth0): making interface the new active one
[  512.560583] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.823821] bond0: (slave eth0): Releasing backup interface
[  516.948268] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.174898] bond0: (slave eth0): Releasing backup interface
[  521.196863] bond0 (unregistering): Released all slaves