[  516.402319] bond0: (slave eth0): making interface the new active one
[  516.402422] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.670585] bond0: (slave eth0): Releasing backup interface
[  520.789161] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.018142] bond0: (slave eth0): Releasing backup interface
[  525.056137] bond0 (unregistering): Released all slaves