[  516.690103] bond0: (slave eth0): making interface the new active one
[  516.690191] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.921026] bond0: (slave eth0): Releasing backup interface
[  521.021677] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.200973] bond0: (slave eth0): Releasing backup interface
[  525.231915] bond0 (unregistering): Released all slaves