[  518.493274] bond0: (slave eth0): making interface the new active one
[  518.493368] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.645072] bond0: (slave eth0): Releasing backup interface
[  522.714004] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.865393] bond0: (slave eth0): Releasing backup interface
[  526.882342] bond0 (unregistering): Released all slaves