[  504.253964] bond0: (slave eth0): making interface the new active one
[  504.254068] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.425802] bond0: (slave eth0): Releasing backup interface
[  508.499530] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.656332] bond0: (slave eth0): Releasing backup interface
[  512.690361] bond0 (unregistering): Released all slaves