[  506.393791] bond0: (slave eth0): making interface the new active one
[  506.393874] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.545961] bond0: (slave eth0): Releasing backup interface
[  510.623112] bond0: (slave eth0): Enslaving as an active interface with an up link
[  514.771329] bond0: (slave eth0): Releasing backup interface
[  514.805302] bond0 (unregistering): Released all slaves