[  518.845276] bond0: (slave eth0): making interface the new active one
[  518.845410] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.055029] bond0: (slave eth0): Releasing backup interface
[  523.126329] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.285332] bond0: (slave eth0): Releasing backup interface
[  527.308347] bond0 (unregistering): Released all slaves