[  512.601999] bond0: (slave eth0): making interface the new active one
[  512.602087] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.817270] bond0: (slave eth0): Releasing backup interface
[  516.901741] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.043815] bond0: (slave eth0): Releasing backup interface
[  521.078743] bond0 (unregistering): Released all slaves