[  516.736921] bond0: (slave eth0): making interface the new active one
[  516.737011] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.919234] bond0: (slave eth0): Releasing backup interface
[  521.003123] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.141259] bond0: (slave eth0): Releasing backup interface
[  525.164118] bond0 (unregistering): Released all slaves