[  519.332093] bond0: (slave eth0): making interface the new active one
[  519.332178] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.547969] bond0: (slave eth0): Releasing backup interface
[  523.647953] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.834184] bond0: (slave eth0): Releasing backup interface
[  527.874043] bond0 (unregistering): Released all slaves