[  515.557150] bond0: (slave eth0): making interface the new active one
[  515.557252] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.760315] bond0: (slave eth0): Releasing backup interface
[  519.839514] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.989409] bond0: (slave eth0): Releasing backup interface
[  524.020255] bond0 (unregistering): Released all slaves