[  835.151966][ T9448] bond0: (slave veth0): Enslaving as a backup interface with a down link
[  835.245228][ T9449] bond0: (slave veth1): Enslaving as a backup interface with a down link
[  835.339862][ T9450] br0: port 1(veth0) entered blocking state
[  835.340143][ T9450] br0: port 1(veth0) entered disabled state
[  835.340384][ T9450] veth0: entered allmulticast mode
[  835.341564][ T9450] veth0: entered promiscuous mode
[  835.425219][ T9451] br0: port 2(veth1) entered blocking state
[  835.425561][ T9451] br0: port 2(veth1) entered disabled state
[  835.425829][ T9451] veth1: entered allmulticast mode
[  835.427408][ T9451] veth1: entered promiscuous mode
[  835.885634][   T40] br0: port 1(veth0) entered blocking state
[  835.885900][   T40] br0: port 1(veth0) entered forwarding state
[  835.886857][   T40] br0: port 2(veth1) entered blocking state
[  835.887078][   T40] br0: port 2(veth1) entered forwarding state
[  837.085581][ T4668] bond0: (slave veth1): link status definitely up
[  837.086030][ T4668] bond0: (slave veth1): making interface the new active one
[  837.087218][ T4668] bond0: active interface up!
[  837.409171][ T8553] veth1: left allmulticast mode
[  837.409377][ T8553] veth1: left promiscuous mode
[  837.409662][ T8553] br0: port 2(veth1) entered disabled state
[  837.411679][ T8553] veth0: left allmulticast mode
[  837.411849][ T8553] veth0: left promiscuous mode
[  837.412131][ T8553] br0: port 1(veth0) entered disabled state
[  837.593651][ T8553] bond0: (slave veth1): Releasing backup interface
[  837.779656][ T8553] bond0: (slave veth0): Releasing backup interface
[  838.154060][ T8553] bond0 (unregistering): Released all slaves