multiple external network dnat bug

[zcq98]

The logical flow table cannot be delivered correctly

vpc1 is connected to two external networks, external and ext1.

switch 1eb412ce-2c44-4026-868a-550716d42277 (subnet2)
    port busybox06.vpc1
        addresses: ["00:00:00:49:1B:8B 192.100.0.4"]
    port subnet2-vpc1
        type: router
        router-port: vpc1-subnet2
switch 803f41ce-876f-4c7f-84a7-bab150e95281 (ext1)
    port ext1-vpc1
        type: router
        router-port: vpc1-ext1
    port localnet.ext1
        type: localnet
        addresses: ["unknown"]
switch e6e819c6-fa41-422e-ad56-166e7044fdd2 (subnet1)
    port busybox03.vpc1
        addresses: ["00:00:00:D2:9D:26 192.50.0.4"]
    port subnet1-vpc1
        type: router
        router-port: vpc1-subnet1
switch 38deb897-6fc1-47fc-a6dc-28f4fea45db0 (external)
    port localnet.external
        type: localnet
        addresses: ["unknown"]
    port external-vpc1
        type: router
        router-port: vpc1-external
router 4d2b3cee-2b71-4139-9d74-55627812f0d2 (vpc1)
    port vpc1-subnet2
        mac: "00:00:00:89:62:10"
        networks: ["192.100.0.1/24"]
    port vpc1-ext1
        mac: "00:00:00:84:CA:10"
        networks: ["192.168.94.128/24"]
        gateway chassis: [3ce122db-07fe-4ffb-a1ca-01b9ad8eaa8e]
    port vpc1-external
        mac: "00:00:00:A9:E1:4A"
        networks: ["192.168.80.128/24"]
        gateway chassis: [3ce122db-07fe-4ffb-a1ca-01b9ad8eaa8e]
    port vpc1-subnet1
        mac: "00:00:00:6C:8F:18"
        networks: ["192.50.0.1/24"]

vpc1 is also connected to two subnets：

• subnet1：192.50.0.0/24
• subnet1：192.100.0.0/24

Set the dnat of virtual machine 192.50.0.4 to 192.168.80.129
Set the dnat of virtual machine 192.100.0.4 to 192.168.94.129

The logical flow table of vpc1 is as follows：

Datapath: "vpc1" (0380a34b-91d1-4dba-9757-3f0233ce77f1)  Pipeline: ingress
 ......
 table=7 (lr_in_dnat), priority=120  , match=(ct.est && !ct.rel && ip4 && reg0 == 192.168.80.129 && tcp && reg9[16..31] == 80 && ct_mark.natted == 1 && is_chassis_resident("cr-vpc1-ext1")), action=(next;)
 table=7 (lr_in_dnat), priority=120  , match=(ct.est && !ct.rel && ip4 && reg0 == 192.168.94.129 && tcp && reg9[16..31] == 80 && ct_mark.natted == 1 && is_chassis_resident("cr-vpc1-ext1")), action=(next;)
 table=7 (lr_in_dnat), priority=120  , match=(ct.new && !ct.rel && ip4 && reg0 == 192.168.80.129 && tcp && reg9[16..31] == 80 && is_chassis_resident("cr-vpc1-ext1")), action=(ct_lb_mark(backends=192.50.0.4:80);)
 table=7 (lr_in_dnat), priority=120  , match=(ct.new && !ct.rel && ip4 && reg0 == 192.168.94.129 && tcp && reg9[16..31] == 80 && is_chassis_resident("cr-vpc1-ext1")), action=(ct_lb_mark(backends=192.100.0.4:80);)
 ......
Datapath: "vpc1" (0380a34b-91d1-4dba-9757-3f0233ce77f1)  Pipeline: egress
......
 table=1 (lr_out_undnat      ), priority=120  , match=(ip4 && ((ip4.src == 192.100.0.4 && tcp.src == 80)) && outport == "vpc1-ext1" && is_chassis_resident("cr-vpc1-ext1")), action=(ct_dnat_in_czone;)
 table=1 (lr_out_undnat      ), priority=120  , match=(ip4 && ((ip4.src == 192.50.0.4 && tcp.src == 80)) && outport == "vpc1-ext1" && is_chassis_resident("cr-vpc1-ext1")), action=(ct_dnat_in_czone;)
......

is_chassis_resident is not set correctly，and outport in Pipeline: egress is also not set correctly
the is_chassis_resident for 192.168.80.129 should be cr-vpc1-external and the outport should be vpc1-external