[  512.375427] bond0: (slave eth0): making interface the new active one
[  512.375528] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.561613] bond0: (slave eth0): Releasing backup interface
[  516.649571] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.788602] bond0: (slave eth0): Releasing backup interface
[  520.816093] bond0 (unregistering): Released all slaves