[  504.070931] bond0: (slave eth0): making interface the new active one
[  504.071061] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.259217] bond0: (slave eth0): Releasing backup interface
[  508.411500] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.613508] bond0: (slave eth0): Releasing backup interface
[  512.635642] bond0 (unregistering): Released all slaves