[  519.648249] bond0: (slave eth0): making interface the new active one
[  519.648329] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.881883] bond0: (slave eth0): Releasing backup interface
[  523.980173] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.160855] bond0: (slave eth0): Releasing backup interface
[  528.181707] bond0 (unregistering): Released all slaves