[  534.636319] bond0: (slave eth0): making interface the new active one
[  534.636391] bond0: (slave eth0): Enslaving as an active interface with an up link
[  538.833767] bond0: (slave eth0): Releasing backup interface
[  538.927364] bond0: (slave eth0): Enslaving as an active interface with an up link
[  543.128428] bond0: (slave eth0): Releasing backup interface