[  506.191100] bond0: (slave eth0): making interface the new active one
[  506.191174] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.361394] bond0: (slave eth0): Releasing backup interface
[  510.434698] bond0: (slave eth0): Enslaving as an active interface with an up link
[  514.586422] bond0: (slave eth0): Releasing backup interface
[  514.620355] bond0 (unregistering): Released all slaves