[  516.018024] bond0: (slave eth0): making interface the new active one
[  516.018120] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.219462] bond0: (slave eth0): Releasing backup interface
[  520.325982] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.507903] bond0: (slave eth0): Releasing backup interface
[  524.539047] bond0 (unregistering): Released all slaves