[  504.556137] bond0: (slave eth0): making interface the new active one
[  504.556216] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.750257] bond0: (slave eth0): Releasing backup interface
[  508.821078] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.971680] bond0: (slave eth0): Releasing backup interface
[  513.000907] bond0 (unregistering): Released all slaves