[  504.814211] bond0: (slave eth0): making interface the new active one
[  504.814302] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.010772] bond0: (slave eth0): Releasing backup interface
[  509.098036] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.300746] bond0: (slave eth0): Releasing backup interface
[  513.324693] bond0 (unregistering): Released all slaves