[  518.901251] bond0: (slave eth0): making interface the new active one
[  518.901335] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.114159] bond0: (slave eth0): Releasing backup interface
[  523.217231] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.395340] bond0: (slave eth0): Releasing backup interface
[  527.420331] bond0 (unregistering): Released all slaves