[  514.972116] bond0: (slave eth0): making interface the new active one
[  514.972207] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.197319] bond0: (slave eth0): Releasing backup interface
[  519.304749] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.487029] bond0: (slave eth0): Releasing backup interface
[  523.519169] bond0 (unregistering): Released all slaves