[  512.830495] bond0: (slave eth0): making interface the new active one
[  512.830576] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.010535] bond0: (slave eth0): Releasing backup interface
[  517.081709] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.237305] bond0: (slave eth0): Releasing backup interface
[  521.256192] bond0 (unregistering): Released all slaves