VM stop and start it's ARP Responder flow lost

OpenDaylight integrates with Openstack, subnet bind with router, and I do the follow operation:

1.Create VM(vm01-1.1.0.12) on Openstack control;

2.Check ARP Responder flow on compute node:

stack@compute1:~$ sudo ovs-ofctl dump-flows -Oopenflow13 br-int table=81
cookie=0x9230108, duration=12849.752s, table=81, n_packets=0, n_bytes=0, priority=100,arp,metadata=0x81389000000/0xfffffffff000000,arp_tpa=1.1.0.1,arp_op=1 actions=move:NXM_OF_ETH_SRC[]>NXM_OF_ETH_DST[],set_field:fa:16:3e:dc:2c:34>eth_src,load:0x2->NXM_OF_ARP_OP[],move:NXM_NX_ARP_SHA[]>NXM_NX_ARP_THA[],move:NXM_OF_ARP_SPA[]>NXM_OF_ARP_TPA[],load:0xfa163edc2c34->NXM_NX_ARP_SHA[],load:0x1010001->NXM_OF_ARP_SPA[],load:0->NXM_OF_IN_PORT[],load:0x800->NXM_NX_REG6[],resubmit(,220)
cookie=0x8220000, duration=15583.091s, table=81, n_packets=430, n_bytes=18060, priority=0 actions=drop

3.Execute the command on openstack control: openstack server stop vm01;

stack@control:~$ openstack server stop vm01
stack@control:~$ openstack server list
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4.Check ARP Responder flow is deleted;

stack@compute1:~$ sudo ovs-ofctl dump-flows -Oopenflow13 br-int table=81
cookie=0x8220000, duration=15722.162s, table=81, n_packets=430, n_bytes=18060, priority=0 actions=drop

5.Execute the command on openstack control: openstack server start vm01;

stack@control:~$ openstack server start vm01
stack@control:~$ openstack server list
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5.Check ARP Responder flow lost:

stack@compute1:~$ sudo ovs-ofctl dump-flows -Oopenflow13 br-int table=81
cookie=0x8220000, duration=15847.843s, table=81, n_packets=430, n_bytes=18060, priority=0 actions=drop