[  502.592352] bond0: (slave eth0): making interface the new active one
[  502.592422] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.772300] bond0: (slave eth0): Releasing backup interface
[  506.846250] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.998391] bond0: (slave eth0): Releasing backup interface
[  511.024375] bond0 (unregistering): Released all slaves