[  512.460106] bond0: (slave eth0): making interface the new active one
[  512.460188] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.696988] bond0: (slave eth0): Releasing backup interface
[  516.822255] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.050973] bond0: (slave eth0): Releasing backup interface
[  521.086970] bond0 (unregistering): Released all slaves