I can reproduce this problem with the script supported by vguntaka in both ovs
version 2.5 and ovs version 2.6.
1. Add bridge
ovs-vsctl add-br br0
2. Add vm port
ovs-vsctl add-port br0 tap0 – set interface tap0 type=internal
ip netns add ns0
ip link set dev tap0 netns ns0
ip netns exec ns0 ip link set dev tap0 up
ip netns exec ns0 ip addr add dev tap0 1.1.1.2/24
ip netns exec ns0 ip route add default via 1.1.1.1
ip netns exec ns0 ip neigh add 1.1.1.1 lladdr 00:00:00:00:11:11 dev tap0
3. Send packet
Ip netns exec ns0 ping 2.2.2.2
4. Add flows (make sure packet is always sending)
while true
do
ovs-ofctl add-flow br0
"priority=200,table=123,idle_timeout=1,in_port=1,actions=controller"
ovs-ofctl add-flow br0
"priority=200,table=123,idle_timeout=1,in_port=2,actions=controller"
ovs-ofctl add-flow br0
"priority=200,table=123,idle_timeout=1,in_port=3,actions=controller"
ovs-ofctl add-flow br0
"priority=200,table=123,idle_timeout=1,in_port=4,actions=controller"
ovs-ofctl del-flows br0
done
waiting about 1 minute or 2 minute, there is error “OFPT_ERROR (xid=0x4):
OFPFMFC_BAD_COMMAND” printed in console.
Also, I noticed that when using Openflow13, the error disappeared, like this:
ovs-ofctl add-flow br0
"priority=200,table=123,idle_timeout=1,in_port=1,actions=controller" –O
openflow13
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