[  513.285277] bond0: (slave eth0): making interface the new active one
[  513.285375] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.488911] bond0: (slave eth0): Releasing backup interface
[  517.578431] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.767022] bond0: (slave eth0): Releasing backup interface
[  521.799986] bond0 (unregistering): Released all slaves