[  856.702787][ T9860] bond0: (slave veth0): Enslaving as a backup interface with a down link
[  856.786264][ T9861] bond0: (slave veth1): Enslaving as a backup interface with a down link
[  856.898274][ T9862] br0: port 1(veth0) entered blocking state
[  856.898607][ T9862] br0: port 1(veth0) entered disabled state
[  856.898881][ T9862] veth0: entered allmulticast mode
[  856.900103][ T9862] veth0: entered promiscuous mode
[  856.983908][ T9863] br0: port 2(veth1) entered blocking state
[  856.984171][ T9863] br0: port 2(veth1) entered disabled state
[  856.984407][ T9863] veth1: entered allmulticast mode
[  856.985809][ T9863] veth1: entered promiscuous mode
[  857.488662][   T40] br0: port 1(veth0) entered blocking state
[  857.489116][   T40] br0: port 1(veth0) entered forwarding state
[  857.490479][   T40] br0: port 2(veth1) entered blocking state
[  857.490838][   T40] br0: port 2(veth1) entered forwarding state
[  858.674018][ T8959] bond0: (slave veth1): link status definitely up
[  858.674518][ T8959] bond0: (slave veth1): making interface the new active one
[  858.675872][ T8959] bond0: active interface up!
[  859.039400][ T4929] veth1: left allmulticast mode
[  859.039688][ T4929] veth1: left promiscuous mode
[  859.040036][ T4929] br0: port 2(veth1) entered disabled state
[  859.042299][ T4929] veth0: left allmulticast mode
[  859.042550][ T4929] veth0: left promiscuous mode
[  859.042858][ T4929] br0: port 1(veth0) entered disabled state
[  859.192700][ T4929] bond0: (slave veth1): Releasing backup interface
[  859.364013][ T4929] bond0: (slave veth0): Releasing backup interface
[  859.794599][ T4929] bond0 (unregistering): Released all slaves