[  831.581016][ T9256] bond0: (slave veth0): Enslaving as a backup interface with a down link
[  831.674072][ T9257] bond0: (slave veth1): Enslaving as a backup interface with a down link
[  831.774827][ T9258] br0: port 1(veth0) entered blocking state
[  831.775255][ T9258] br0: port 1(veth0) entered disabled state
[  831.775638][ T9258] veth0: entered allmulticast mode
[  831.777547][ T9258] veth0: entered promiscuous mode
[  831.893276][ T9259] br0: port 2(veth1) entered blocking state
[  831.893579][ T9259] br0: port 2(veth1) entered disabled state
[  831.893886][ T9259] veth1: entered allmulticast mode
[  831.895153][ T9259] veth1: entered promiscuous mode
[  832.282613][   T38] br0: port 1(veth0) entered blocking state
[  832.282860][   T38] br0: port 1(veth0) entered forwarding state
[  832.283899][   T38] br0: port 2(veth1) entered blocking state
[  832.284233][   T38] br0: port 2(veth1) entered forwarding state
[  833.538633][ T8750] bond0: (slave veth1): link status definitely up
[  833.539117][ T8750] bond0: (slave veth1): making interface the new active one
[  833.542055][ T8750] bond0: active interface up!
[  834.077421][ T8750] veth1: left allmulticast mode
[  834.077775][ T8750] veth1: left promiscuous mode
[  834.078283][ T8750] br0: port 2(veth1) entered disabled state
[  834.082012][ T8750] veth0: left allmulticast mode
[  834.082374][ T8750] veth0: left promiscuous mode
[  834.082817][ T8750] br0: port 1(veth0) entered disabled state
[  834.264959][ T8750] bond0: (slave veth1): Releasing backup interface
[  834.468668][ T8750] bond0: (slave veth0): Releasing backup interface
[  834.918172][ T8750] bond0 (unregistering): Released all slaves