[  515.288100] bond0: (slave eth0): making interface the new active one
[  515.288190] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.511120] bond0: (slave eth0): Releasing backup interface
[  519.612901] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.800249] bond0: (slave eth0): Releasing backup interface
[  523.824133] bond0 (unregistering): Released all slaves