[  516.422402] bond0: (slave eth0): making interface the new active one
[  516.422490] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.666436] bond0: (slave eth0): Releasing backup interface
[  520.780522] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.950095] bond0: (slave eth0): Releasing backup interface
[  524.972040] bond0 (unregistering): Released all slaves