[  504.780979] bond0: (slave eth0): making interface the new active one
[  504.781047] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.944747] bond0: (slave eth0): Releasing backup interface
[  509.041349] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.235372] bond0: (slave eth0): Releasing backup interface
[  513.260653] bond0 (unregistering): Released all slaves