[  503.512604] bond0: (slave eth0): making interface the new active one
[  503.512700] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.734037] bond0: (slave eth0): Releasing backup interface
[  507.817832] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.962658] bond0: (slave eth0): Releasing backup interface
[  511.996140] bond0 (unregistering): Released all slaves