[  512.631661] bond0: (slave eth0): making interface the new active one
[  512.631748] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.828279] bond0: (slave eth0): Releasing backup interface
[  516.943754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.120385] bond0: (slave eth0): Releasing backup interface
[  521.153900] bond0 (unregistering): Released all slaves