[  517.558220] bond0: (slave eth0): making interface the new active one
[  517.558288] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.744091] bond0: (slave eth0): Releasing backup interface
[  521.828618] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.969766] bond0: (slave eth0): Releasing backup interface
[  526.000703] bond0 (unregistering): Released all slaves