[  523.350487] bond0: (slave eth0): making interface the new active one
[  523.350556] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.566755] bond0: (slave eth0): Releasing backup interface
[  527.653399] bond0: (slave eth0): Enslaving as an active interface with an up link
[  531.793771] bond0: (slave eth0): Releasing backup interface
[  531.818677] bond0 (unregistering): Released all slaves