[  500.253112] bond0: (slave eth0): making interface the new active one
[  500.253184] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.472693] bond0: (slave eth0): Releasing backup interface
[  504.566336] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.755811] bond0: (slave eth0): Releasing backup interface
[  508.777750] bond0 (unregistering): Released all slaves