[  515.391348] bond0: (slave eth0): making interface the new active one
[  515.391430] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.642701] bond0: (slave eth0): Releasing backup interface
[  519.751628] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.935070] bond0: (slave eth0): Releasing backup interface
[  523.964127] bond0 (unregistering): Released all slaves