# ovs-vsctl show
3270e9f9-1e3e-4de9-b11d-bbd7d7b49326
    Bridge "ovs0"
        Port "ovs0"
            Interface "ovs0"
                type: internal
        Port "eth0"
            trunks: [1, 5, 7, 111]
            Interface "eth0"
        Port "ovs0-vlan5"
            tag: 5
            Interface "ovs0-vlan5"
                type: internal
        Port "tapvm4"
            tag: 7
            Interface "tapvm4"
    Bridge br-int
        fail_mode: secure
        Port "ovn-19f0ce-0"
            Interface "ovn-19f0ce-0"
                type: geneve
                options: {csum="true", key=flow, remote_ip="192.168.5.50"}

<interface type='ethernet'>
      <mac address='ca:fc:be:9e:86:93'/>
      <target dev='tapvm4'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <rom file=''/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

    <interface type='ethernet'>
      <mac address='52:54:00:93:05:27'/>
      <target dev='tapvnet42'/>
      <model type='virtio'/>
      <mtu size='1442'/>
      <alias name='net1'/>
      <rom file=''/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>

ovs-vsctl --timeout=5 -- \
          --if-exists del-port tapvnet42 \
          -- add-port br-int tapvnet42 \
          -- set Interface tapvnet42 "external-ids:attached-mac=\"52:54:00:93:05:27\"" \
          -- set Interface tapvnet42 "external-ids:iface-id=\"ad800793-41c4-412d-b43a-bfba69b52707\"" \
          -- set Interface tapvnet42 "external-ids:vm-id=\"10faf03f-9715-48d6-ba16-02712a8dc0e2\"" \
          -- set Interface tapvnet42 external-ids:iface-status=active

switch 1fcc53e3-a78d-45f7-8f29-843f4a3a5fc1 (sw1)
        port b71994c8-2719-11ea-abe6-3c07542c942f
            addresses: ["52:54:00:93:05:27"]
        port sw1gw-attachment
            addresses: ["52:54:00:93:05:30 192.168.39.1"]
    router e360a9fb-0a5b-4d2b-aa59-9528fc53210d (lr1)
        port sw1gw
            mac: "52:54:00:93:05:30"
            networks: ["192.168.39.1/24"]

# ovn-nbctl list Logical_switch_Port b71994c8-2719-11ea-abe6-3c07542c942f
_uuid               : 2b3e1d19-4c0b-4340-966e-1ec6a35cb6be
addresses           : ["52:54:00:93:05:27"]
dhcpv4_options      : db175c1e-e528-4773-bd14-b51b8c0c7de7
dhcpv6_options      : []
dynamic_addresses   : []
enabled             : []
external_ids        : {}
name                : "b71994c8-2719-11ea-abe6-3c07542c942f"
options             : {}
parent_name         : []
port_security       : []
tag                 : []
tag_request         : []
type                : ""
up                  : true

# ovn-nbctl list DHCP_Options
_uuid               : db175c1e-e528-4773-bd14-b51b8c0c7de7
cidr                : "192.168.39.0/24"
external_ids        : {}
options             : {lease_time="3600", mtu="1442", server_id="192.168.39.1", server_mac="52:54:00:93:05:30"}

ovn-nbctl dhcp-options-create 192.168.39.0/24

ovn-nbctl dhcp-options-set-options db175c1e-e528-4773-bd14-b51b8c0c7de7 \
          server_id=192.168.39.1 \
          server_mac=52:54:00:93:05:30 \
          lease_time=3600 \
          mtu=1442

ovn-nbctl lr-add lr1

ovn-nbctl lrp-add lr1 sw1gw 52:54:00:93:05:30 192.168.39.1/24

ovn-nbctl -- lsp-add sw1 sw1gw-attachment \
               -- set Logical_Switch_Port sw1gw-attachment \
                  type=router \
                  options:router-port=sw1gw \
                  addresses='"52:54:00:93:05:30 192.168.39.1"'

ovn-nbctl lsp-set-dhcpv4-options b71994c8-2719-11ea-abe6-3c07542c942f db175c1e-e528-4773-bd14-b51b8c0c7de7

# ovn-sbctl lflow-list 8823692e-c0c3-451f-8959-88d5059df084
Datapath: "sw1" (8823692e-c0c3-451f-8959-88d5059df084)  Pipeline: ingress
  table=0 (ls_in_port_sec_l2  ), priority=100  , match=(eth.src[40]), action=(drop;)
  table=0 (ls_in_port_sec_l2  ), priority=100  , match=(vlan.present), action=(drop;)
  table=0 (ls_in_port_sec_l2  ), priority=50   , match=(inport == "b71994c8-2719-11ea-abe6-3c07542c942f"), action=(next;)
  table=0 (ls_in_port_sec_l2  ), priority=50   , match=(inport == "sw1gw-attachment"), action=(next;)
  table=1 (ls_in_port_sec_ip  ), priority=0    , match=(1), action=(next;)
  table=2 (ls_in_port_sec_nd  ), priority=0    , match=(1), action=(next;)
  table=3 (ls_in_pre_acl      ), priority=0    , match=(1), action=(next;)
  table=4 (ls_in_pre_lb       ), priority=0    , match=(1), action=(next;)
  table=5 (ls_in_pre_stateful ), priority=100  , match=(reg0[0] == 1), action=(ct_next;)
  table=5 (ls_in_pre_stateful ), priority=0    , match=(1), action=(next;)
  table=6 (ls_in_acl          ), priority=0    , match=(1), action=(next;)
  table=7 (ls_in_lb           ), priority=0    , match=(1), action=(next;)
  table=8 (ls_in_stateful     ), priority=100  , match=(reg0[1] == 1), action=(ct_commit(ct_label=0/1); next;)
  table=8 (ls_in_stateful     ), priority=100  , match=(reg0[2] == 1), action=(ct_lb;)
  table=8 (ls_in_stateful     ), priority=0    , match=(1), action=(next;)
  table=9 (ls_in_arp_rsp      ), priority=100  , match=(arp.tpa == 192.168.39.1 && arp.op == 1 && inport == "sw1gw-attachment"), action=(next;)
  table=9 (ls_in_arp_rsp      ), priority=50   , match=(arp.tpa == 192.168.39.1 && arp.op == 1), action=(eth.dst = eth.src; eth.src = 52:54:00:93:05:30; arp.op = 2; /* ARP reply */ arp.tha = arp.sha; arp.sha = 52:54:00:93:05:30; arp.tpa = arp.spa; arp.spa = 192.168.39.1; outport = inport; flags.loopback = 1; output;)
  table=9 (ls_in_arp_rsp      ), priority=0    , match=(1), action=(next;)
  table=10(ls_in_dhcp_options ), priority=0    , match=(1), action=(next;)
  table=11(ls_in_dhcp_response), priority=0    , match=(1), action=(next;)
  table=12(ls_in_l2_lkup      ), priority=100  , match=(eth.mcast), action=(outport = "_MC_flood"; output;)
  table=12(ls_in_l2_lkup      ), priority=50   , match=(eth.dst == 52:54:00:93:05:27), action=(outport = "b71994c8-2719-11ea-abe6-3c07542c942f"; output;)
  table=12(ls_in_l2_lkup      ), priority=50   , match=(eth.dst == 52:54:00:93:05:30), action=(outport = "sw1gw-attachment"; output;)
Datapath: "sw1" (8823692e-c0c3-451f-8959-88d5059df084)  Pipeline: egress
  table=0 (ls_out_pre_lb      ), priority=0    , match=(1), action=(next;)
  table=1 (ls_out_pre_acl     ), priority=0    , match=(1), action=(next;)
  table=2 (ls_out_pre_stateful), priority=100  , match=(reg0[0] == 1), action=(ct_next;)
  table=2 (ls_out_pre_stateful), priority=0    , match=(1), action=(next;)
  table=3 (ls_out_lb          ), priority=0    , match=(1), action=(next;)
  table=4 (ls_out_acl         ), priority=0    , match=(1), action=(next;)
  table=5 (ls_out_stateful    ), priority=100  , match=(reg0[1] == 1), action=(ct_commit(ct_label=0/1); next;)
  table=5 (ls_out_stateful    ), priority=100  , match=(reg0[2] == 1), action=(ct_lb;)
  table=5 (ls_out_stateful    ), priority=0    , match=(1), action=(next;)
  table=6 (ls_out_port_sec_ip ), priority=0    , match=(1), action=(next;)
  table=7 (ls_out_port_sec_l2 ), priority=100  , match=(eth.mcast), action=(output;)
  table=7 (ls_out_port_sec_l2 ), priority=50   , match=(outport == "b71994c8-2719-11ea-abe6-3c07542c942f"), action=(output;)
  table=7 (ls_out_port_sec_l2 ), priority=50   , match=(outport == "sw1gw-attachment"), action=(output;)