[  511.750141] bond0: (slave eth0): making interface the new active one
[  511.750228] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.999448] bond0: (slave eth0): Releasing backup interface
[  516.113208] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.283179] bond0: (slave eth0): Releasing backup interface
[  520.311112] bond0 (unregistering): Released all slaves