[  515.313385] bond0: (slave eth0): making interface the new active one
[  515.313469] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.516891] bond0: (slave eth0): Releasing backup interface
[  519.632816] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.866144] bond0: (slave eth0): Releasing backup interface
[  523.886992] bond0 (unregistering): Released all slaves