[  516.634779] bond0: (slave eth0): making interface the new active one
[  516.634880] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.852851] bond0: (slave eth0): Releasing backup interface
[  520.933978] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.081233] bond0: (slave eth0): Releasing backup interface