[  514.509368] bond0: (slave eth0): making interface the new active one
[  514.509458] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.748951] bond0: (slave eth0): Releasing backup interface
[  518.863208] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.035114] bond0: (slave eth0): Releasing backup interface
[  523.060018] bond0 (unregistering): Released all slaves