[  504.496961] bond0: (slave eth0): making interface the new active one
[  504.497033] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.690300] bond0: (slave eth0): Releasing backup interface
[  508.783378] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.981777] bond0: (slave eth0): Releasing backup interface
[  513.002722] bond0 (unregistering): Released all slaves