[  504.609975] bond0: (slave eth0): making interface the new active one
[  504.610099] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.819074] bond0: (slave eth0): Releasing backup interface
[  508.893394] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.046387] bond0: (slave eth0): Releasing backup interface
[  513.071353] bond0 (unregistering): Released all slaves