[  515.213996] bond0: (slave eth0): making interface the new active one
[  515.214067] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.385572] bond0: (slave eth0): Releasing backup interface
[  519.470208] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.611357] bond0: (slave eth0): Releasing backup interface
[  523.636294] bond0 (unregistering): Released all slaves