[  519.783707] bond0: (slave eth0): making interface the new active one
[  519.783787] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.992220] bond0: (slave eth0): Releasing backup interface
[  524.103132] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.281934] bond0: (slave eth0): Releasing backup interface
[  528.317927] bond0 (unregistering): Released all slaves