[  517.240225] bond0: (slave eth0): making interface the new active one
[  517.240301] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.500422] bond0: (slave eth0): Releasing backup interface
[  521.602648] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.795078] bond0: (slave eth0): Releasing backup interface
[  525.833031] bond0 (unregistering): Released all slaves