[  519.606854] bond0: (slave eth0): making interface the new active one
[  519.606935] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.796917] bond0: (slave eth0): Releasing backup interface
[  523.908517] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.093079] bond0: (slave eth0): Releasing backup interface
[  528.130958] bond0 (unregistering): Released all slaves