[  504.545291] bond0: (slave eth0): making interface the new active one
[  504.545381] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.687993] bond0: (slave eth0): Releasing backup interface
[  508.746586] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.913340] bond0: (slave eth0): Releasing backup interface
[  512.944249] bond0 (unregistering): Released all slaves