[  512.405316] bond0: (slave eth0): making interface the new active one
[  512.405410] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.625262] bond0: (slave eth0): Releasing backup interface
[  516.723345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.918814] bond0: (slave eth0): Releasing backup interface
[  520.942706] bond0 (unregistering): Released all slaves