[  853.214018][ T9576] bond0: (slave veth0): Enslaving as a backup interface with a down link
[  853.317798][ T9577] bond0: (slave veth1): Enslaving as a backup interface with a down link
[  853.406112][ T9578] br0: port 1(veth0) entered blocking state
[  853.406495][ T9578] br0: port 1(veth0) entered disabled state
[  853.406744][ T9578] veth0: entered allmulticast mode
[  853.407952][ T9578] veth0: entered promiscuous mode
[  853.483066][ T9579] br0: port 2(veth1) entered blocking state
[  853.483342][ T9579] br0: port 2(veth1) entered disabled state
[  853.483604][ T9579] veth1: entered allmulticast mode
[  853.484823][ T9579] veth1: entered promiscuous mode
[  853.960501][   T37] br0: port 1(veth0) entered blocking state
[  853.960862][   T37] br0: port 1(veth0) entered forwarding state
[  853.961896][   T37] br0: port 2(veth1) entered blocking state
[  853.962102][   T37] br0: port 2(veth1) entered forwarding state
[  855.180112][  T308] bond0: (slave veth1): link status definitely up
[  855.180720][  T308] bond0: (slave veth1): making interface the new active one
[  855.183328][  T308] bond0: active interface up!
[  855.569880][ T4556] veth1: left allmulticast mode
[  855.570097][ T4556] veth1: left promiscuous mode
[  855.570415][ T4556] br0: port 2(veth1) entered disabled state
[  855.572894][ T4556] veth0: left allmulticast mode
[  855.573086][ T4556] veth0: left promiscuous mode
[  855.573397][ T4556] br0: port 1(veth0) entered disabled state
[  855.708884][ T4556] bond0: (slave veth1): Releasing backup interface
[  855.801814][ T4556] bond0: (slave veth0): Releasing backup interface
[  856.204608][ T4556] bond0 (unregistering): Released all slaves