[  504.722229] bond0: (slave eth0): making interface the new active one
[  504.722351] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.886278] bond0: (slave eth0): Releasing backup interface
[  508.966319] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.114552] bond0: (slave eth0): Releasing backup interface
[  513.144520] bond0 (unregistering): Released all slaves