[  502.480317] bond0: (slave eth0): making interface the new active one
[  502.480385] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.639931] bond0: (slave eth0): Releasing backup interface
[  506.697207] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.863429] bond0: (slave eth0): Releasing backup interface
[  510.890338] bond0 (unregistering): Released all slaves