[  520.440206] bond0: (slave eth0): making interface the new active one
[  520.440288] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.619598] bond0: (slave eth0): Releasing backup interface
[  524.691222] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.848463] bond0: (slave eth0): Releasing backup interface
[  528.878410] bond0 (unregistering): Released all slaves