[  540.444866] bond0: (slave eth0): making interface the new active one
[  540.444937] bond0: (slave eth0): Enslaving as an active interface with an up link
[  544.661990] bond0: (slave eth0): Releasing backup interface
[  544.743096] bond0: (slave eth0): Enslaving as an active interface with an up link
[  548.945688] bond0: (slave eth0): Releasing backup interface
[  548.973786] bond0 (unregistering): Released all slaves