[  870.293906][ T9421] bond0: (slave veth0): Enslaving as a backup interface with a down link
[  870.390081][ T9422] bond0: (slave veth1): Enslaving as a backup interface with a down link
[  870.507430][ T9423] br0: port 1(veth0) entered blocking state
[  870.507880][ T9423] br0: port 1(veth0) entered disabled state
[  870.508312][ T9423] veth0: entered allmulticast mode
[  870.510368][ T9423] veth0: entered promiscuous mode
[  870.619043][ T9424] br0: port 2(veth1) entered blocking state
[  870.619390][ T9424] br0: port 2(veth1) entered disabled state
[  870.619687][ T9424] veth1: entered allmulticast mode
[  870.620929][ T9424] veth1: entered promiscuous mode
[  871.015892][   T56] br0: port 1(veth0) entered blocking state
[  871.016179][   T56] br0: port 1(veth0) entered forwarding state
[  871.017281][   T56] br0: port 2(veth1) entered blocking state
[  871.017547][   T56] br0: port 2(veth1) entered forwarding state
[  872.262917][ T4952] bond0: (slave veth1): link status definitely up
[  872.263529][ T4952] bond0: (slave veth1): making interface the new active one
[  872.265384][ T4952] bond0: active interface up!
[  872.471846][ T8538] veth1: left allmulticast mode
[  872.472149][ T8538] veth1: left promiscuous mode
[  872.472621][ T8538] br0: port 2(veth1) entered disabled state
[  872.475842][ T8538] veth0: left allmulticast mode
[  872.476103][ T8538] veth0: left promiscuous mode
[  872.476515][ T8538] br0: port 1(veth0) entered disabled state
[  872.637366][ T8538] bond0: (slave veth1): Releasing backup interface
[  872.731806][ T8538] bond0: (slave veth0): Releasing backup interface
[  873.160851][ T8538] bond0 (unregistering): Released all slaves