[  502.844611] bond0: (slave eth0): making interface the new active one
[  502.844704] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.025331] bond0: (slave eth0): Releasing backup interface
[  507.097080] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.259209] bond0: (slave eth0): Releasing backup interface
[  511.290482] bond0 (unregistering): Released all slaves