[  520.186008] bond0: (slave eth0): making interface the new active one
[  520.186108] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.366214] bond0: (slave eth0): Releasing backup interface
[  524.452146] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.597809] bond0: (slave eth0): Releasing backup interface
[  528.631768] bond0 (unregistering): Released all slaves