[  502.569107] bond0: (slave eth0): making interface the new active one
[  502.569179] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.762286] bond0: (slave eth0): Releasing backup interface
[  506.841416] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.987549] bond0: (slave eth0): Releasing backup interface
[  511.018209] bond0 (unregistering): Released all slaves