[  519.263096] bond0: (slave eth0): making interface the new active one
[  519.263171] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.466498] bond0: (slave eth0): Releasing backup interface
[  523.537145] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.690302] bond0: (slave eth0): Releasing backup interface
[  527.712259] bond0 (unregistering): Released all slaves