[  502.605055] bond0: (slave eth0): making interface the new active one
[  502.605157] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.766844] bond0: (slave eth0): Releasing backup interface
[  506.837954] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.999213] bond0: (slave eth0): Releasing backup interface
[  511.029176] bond0 (unregistering): Released all slaves