[  506.486326] bond0: (slave eth0): making interface the new active one
[  506.486416] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.672475] bond0: (slave eth0): Releasing backup interface
[  510.753587] bond0: (slave eth0): Enslaving as an active interface with an up link
[  514.899896] bond0: (slave eth0): Releasing backup interface
[  514.921344] bond0 (unregistering): Released all slaves