[  516.430249] bond0: (slave eth0): making interface the new active one
[  516.430330] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.587085] bond0: (slave eth0): Releasing backup interface
[  520.650584] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.809740] bond0: (slave eth0): Releasing backup interface
[  524.836672] bond0 (unregistering): Released all slaves