[  519.742269] bond0: (slave eth0): making interface the new active one
[  519.742340] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.993257] bond0: (slave eth0): Releasing backup interface
[  524.087801] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.282104] bond0: (slave eth0): Releasing backup interface
[  528.310023] bond0 (unregistering): Released all slaves