Hello,
My server is running debian testing. I install two ovs version through apt:
```
openvswitch-switch/testing,unstable,now 2.15.0+ds1-2 amd64 [installed]
Open vSwitch switch implementations
openvswitch-switch-dpdk/testing,unstable,now 2.15.0+ds1-2 amd64 [installed]
DPDK enabled Open vSwitch switch implementation
```
Then I found something difference between them.
Here's my experience:
```
# switch ovs version to ovs-vswitchd
update-alternatives --set ovs-vswitchd /usr/lib/openvswitch-common/ovs-vswitchd
/etc/init.d/openvswitch-switch restart
ip addr add 10.90.67.148/25 dev br0
ping 10.90.67.129 # network is ok
# switch ovs version to ovs-vswitchd-dpdk
update-alternatives --set ovs-vswitchd
/usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
/etc/init.d/openvswitch-switch restart
ip addr add 10.90.67.148/25 dev br0
ping 10.90.67.129 # unreachable
```
The same configuration, using ovs-vswitchd was reachable while using
ovs-vswitchd-dpdk was unreachable.
Then I used `tcpdump br0` to checkout if there are packets from br0, and I
found some ARP packets:
```
root@debian:~# tcpdump -i br0 -nnn
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on br0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
02:14:27.010265 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28
02:14:28.034127 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28
02:14:29.058128 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28
```
But when I ran `ovs-ofctl dump-flows br0`, I saw n_packets is 0:
```
root@debian:~# ovs-ofctl dump-flows br0
cookie=0x0, duration=1016.243s, table=0, n_packets=0, n_bytes=0, priority=0
actions=NORMAL
```
Why does ovs-vswitchd-dpdk ignore the packet from br0? Does it need additional
configuration?
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