[  519.121617] bond0: (slave eth0): making interface the new active one
[  519.121711] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.350164] bond0: (slave eth0): Releasing backup interface
[  523.451813] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.639178] bond0: (slave eth0): Releasing backup interface
[  527.668088] bond0 (unregistering): Released all slaves