[  512.503123] bond0: (slave eth0): making interface the new active one
[  512.503220] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.760599] bond0: (slave eth0): Releasing backup interface
[  516.875390] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.053046] bond0: (slave eth0): Releasing backup interface
[  521.081001] bond0 (unregistering): Released all slaves