[  519.612890] bond0: (slave eth0): making interface the new active one
[  519.612966] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.785444] bond0: (slave eth0): Releasing backup interface
[  523.844779] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.017553] bond0: (slave eth0): Releasing backup interface
[  528.050582] bond0 (unregistering): Released all slaves