[  509.128760] bond0: (slave eth0): making interface the new active one
[  509.128832] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.368924] bond0: (slave eth0): Releasing backup interface
[  513.476786] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.658682] bond0: (slave eth0): Releasing backup interface
[  517.698887] bond0 (unregistering): Released all slaves