[  515.757505] bond0: (slave eth0): making interface the new active one
[  515.757592] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.965195] bond0: (slave eth0): Releasing backup interface
[  520.067020] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.241984] bond0: (slave eth0): Releasing backup interface
[  524.274995] bond0 (unregistering): Released all slaves