[  513.062467] bond0: (slave eth0): making interface the new active one
[  513.062543] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.274486] bond0: (slave eth0): Releasing backup interface
[  517.393229] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.565948] bond0: (slave eth0): Releasing backup interface
[  521.588910] bond0 (unregistering): Released all slaves