[  512.202043] bond0: (slave eth0): making interface the new active one
[  512.202111] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.451450] bond0: (slave eth0): Releasing backup interface
[  516.554335] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.736434] bond0: (slave eth0): Releasing backup interface
[  520.761361] bond0 (unregistering): Released all slaves