[  508.538273] bond0: (slave eth0): making interface the new active one
[  508.538348] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.718861] bond0: (slave eth0): Releasing backup interface
[  512.791175] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.949629] bond0: (slave eth0): Releasing backup interface
[  516.984530] bond0 (unregistering): Released all slaves