[ 1776.884255] br0: port 1(dummy0) entered blocking state
[ 1776.884331] br0: port 1(dummy0) entered disabled state
[ 1776.884427] dummy0: entered allmulticast mode
[ 1776.884515] dummy0: entered promiscuous mode
[ 1776.888156] br0: port 1(dummy0) entered blocking state
[ 1776.888194] br0: port 1(dummy0) entered forwarding state
[ 1777.163173] dummy0: left allmulticast mode
[ 1777.163217] dummy0: left promiscuous mode
[ 1777.163247] br0: port 1(dummy0) entered disabled state