[  519.720315] bond0: (slave eth0): making interface the new active one
[  519.720394] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.914039] bond0: (slave eth0): Releasing backup interface
[  523.976337] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.138033] bond0: (slave eth0): Releasing backup interface
[  528.168933] bond0 (unregistering): Released all slaves