[  518.868716] bond0: (slave eth0): making interface the new active one
[  518.868819] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.100577] bond0: (slave eth0): Releasing backup interface
[  523.179348] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.383059] bond0: (slave eth0): Releasing backup interface
[  527.414010] bond0 (unregistering): Released all slaves