[  512.008695] bond0: (slave eth0): making interface the new active one
[  512.008760] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.251725] bond0: (slave eth0): Releasing backup interface
[  516.362651] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.538050] bond0: (slave eth0): Releasing backup interface
[  520.571905] bond0 (unregistering): Released all slaves