[  512.616881] bond0: (slave eth0): making interface the new active one
[  512.616960] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.828533] bond0: (slave eth0): Releasing backup interface
[  516.939491] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.121879] bond0: (slave eth0): Releasing backup interface
[  521.149993] bond0 (unregistering): Released all slaves