[  519.578140] bond0: (slave eth0): making interface the new active one
[  519.578243] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.793599] bond0: (slave eth0): Releasing backup interface
[  523.871032] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.019179] bond0: (slave eth0): Releasing backup interface
[  528.041126] bond0 (unregistering): Released all slaves