[one-users] problems with openvswitch after upgrading to 4.4

[samuel]

Hi folks,

We're just evaluating new version 4.4 and everything seems to work except
for a network issue with openvswitch. From inside the VM the nic is
attached but no traffic is flowing.

Debugging the process everything seems ok.

Sunstone log:
Thu Dec 19 09:36:58 2013 [VMM][I]: Successfully execute virtualization
driver operation: attach_nic.
Thu Dec 19 09:36:58 2013 [VMM][I]: post: Executed "sudo ovs-vsctl set Port
vnet4 tag=1030".
Thu Dec 19 09:36:58 2013 [VMM][I]: post: Executed "sudo ovs-ofctl add-flow
bridge
in_port=112,arp,dl_src=09:00:57:ec:d9:96,priority=45000,actions=drop".
Thu Dec 19 09:36:58 2013 [VMM][I]: post: Executed "sudo ovs-ofctl add-flow
bridge
in_port=112,arp,dl_src=09:00:57:ec:d9:96,nw_src=A.B.C.D,priority=46000,actions=normal".
Thu Dec 19 09:36:58 2013 [VMM][I]: post: Executed "sudo ovs-ofctl add-flow
bridge in_port=112,dl_src=09:00:57:ec:d9:96,priority=40000,actions=normal".
Thu Dec 19 09:36:59 2013 [VMM][I]: post: Executed "sudo ovs-ofctl add-flow
bridge in_port=112,priority=39000,actions=drop".
Thu Dec 19 09:36:59 2013 [VMM][I]: ExitCode: 0
Thu Dec 19 09:36:59 2013 [VMM][I]: Successfully execute network driver
operation: post.
Thu Dec 19 09:36:59 2013 [VMM][I]: VM NIC Successfully attached.

going to the host:
the port is effectively created:
ovs-vsctl show
        Port "vnet4"
            tag: 1030
            Interface "vnet4"

ovs-ofctl dump-flows bridge | grep 112
 cookie=0x0, duration=1714.529s, table=0, n_packets=8, n_bytes=336,
idle_age=1484, priority=45000,arp,in_port=112,dl_src=09:00:57:ec:d9:96
actions=drop
 cookie=0x0, duration=1714.515s, table=0, n_packets=0, n_bytes=0,
idle_age=1714,
priority=46000,arp,in_port=112,dl_src=09:00:57:ec:d9:96,nw_src=A.B.C.D
actions=NORMAL
 cookie=0x0, duration=1714.501s, table=0, n_packets=264, n_bytes=35449,
idle_age=56, priority=40000,in_port=112,dl_src=09:00:57:ec:d9:96
actions=NORMAL
 cookie=0x0, duration=1714.485s, table=0, n_packets=0, n_bytes=0,
idle_age=1714, priority=39000,in_port=112 actions=drop

 ovs-dpctl show bridge
    port 112: vnet4

Can anyone provide any information about how to debug further why there's
no traffic?

Thanks in advance,
Samuel.
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