[  519.459104] bond0: (slave eth0): making interface the new active one
[  519.459176] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.594741] bond0: (slave eth0): Releasing backup interface
[  523.648413] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.821887] bond0: (slave eth0): Releasing backup interface
[  527.852878] bond0 (unregistering): Released all slaves