[  519.719221] bond0: (slave eth0): making interface the new active one
[  519.719308] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.913485] bond0: (slave eth0): Releasing backup interface
[  523.970958] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.142650] bond0: (slave eth0): Releasing backup interface
[  528.163206] bond0 (unregistering): Released all slaves