[  502.938165] bond0: (slave eth0): making interface the new active one
[  502.938258] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.146723] bond0: (slave eth0): Releasing backup interface
[  507.221833] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.374393] bond0: (slave eth0): Releasing backup interface
[  511.399297] bond0 (unregistering): Released all slaves