[  512.592470] bond0: (slave eth0): making interface the new active one
[  512.592577] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.829593] bond0: (slave eth0): Releasing backup interface
[  516.940625] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.112064] bond0: (slave eth0): Releasing backup interface
[  521.151935] bond0 (unregistering): Released all slaves