[  511.809361] bond0: (slave eth0): making interface the new active one
[  511.809438] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.056022] bond0: (slave eth0): Releasing backup interface
[  516.161047] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.354680] bond0: (slave eth0): Releasing backup interface
[  520.389977] bond0 (unregistering): Released all slaves