[  515.506546] bond0: (slave eth0): making interface the new active one
[  515.506630] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.697909] bond0: (slave eth0): Releasing backup interface
[  519.763526] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.924335] bond0: (slave eth0): Releasing backup interface
[  523.951300] bond0 (unregistering): Released all slaves