[  518.075729] bond0: (slave eth0): making interface the new active one
[  518.075832] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.327841] bond0: (slave eth0): Releasing backup interface
[  522.436491] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.619915] bond0: (slave eth0): Releasing backup interface
[  526.643797] bond0 (unregistering): Released all slaves