[  512.238501] bond0: (slave eth0): making interface the new active one
[  512.238564] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.438958] bond0: (slave eth0): Releasing backup interface
[  516.547050] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.723888] bond0: (slave eth0): Releasing backup interface
[  520.757862] bond0 (unregistering): Released all slaves