[  511.420557] bond0: (slave eth0): making interface the new active one
[  511.420623] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.674100] bond0: (slave eth0): Releasing backup interface
[  515.800437] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.031457] bond0: (slave eth0): Releasing backup interface
[  520.074912] bond0 (unregistering): Released all slaves