[  501.609610] bond0: (slave eth0): making interface the new active one
[  501.609708] bond0: (slave eth0): Enslaving as an active interface with an up link
[  505.799608] bond0: (slave eth0): Releasing backup interface
[  505.869905] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.024342] bond0: (slave eth0): Releasing backup interface
[  510.054198] bond0 (unregistering): Released all slaves