[  513.857936] bond0: (slave eth0): making interface the new active one
[  513.858045] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.114527] bond0: (slave eth0): Releasing backup interface
[  518.236457] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.462067] bond0: (slave eth0): Releasing backup interface
[  522.492005] bond0 (unregistering): Released all slaves