[  512.597186] bond0: (slave eth0): making interface the new active one
[  512.597260] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.823933] bond0: (slave eth0): Releasing backup interface
[  516.936345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.116848] bond0: (slave eth0): Releasing backup interface
[  521.145883] bond0 (unregistering): Released all slaves