[  519.678229] bond0: (slave eth0): making interface the new active one
[  519.678342] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.852573] bond0: (slave eth0): Releasing backup interface
[  523.923023] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.079809] bond0: (slave eth0): Releasing backup interface
[  528.106643] bond0 (unregistering): Released all slaves