[  513.489171] bond0: (slave eth0): making interface the new active one
[  513.489294] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.648672] bond0: (slave eth0): Releasing backup interface
[  517.715223] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.871350] bond0: (slave eth0): Releasing backup interface
[  521.893307] bond0 (unregistering): Released all slaves