[  516.191794] bond0: (slave eth0): making interface the new active one
[  516.191873] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.419252] bond0: (slave eth0): Releasing backup interface
[  520.521132] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.702928] bond0: (slave eth0): Releasing backup interface
[  524.734996] bond0 (unregistering): Released all slaves