nodeSelector in EgressFirewall doesn't work in dualstack cluster

4.13.0-0.nightly-2023-03-05-104719 

Always

1.  create a namespace test and a pod in it

2. Get one node ipv4 and ipv6 addresses
oc describe node worker-00.jkuriakonew-0703.qe.devcluster.openshift.com | grep host-addresses
Annotations:        k8s.ovn.org/host-addresses: ["147.75.55.145","2604:1380:4642:7e00::1f"]

3.Before apply egressfirewall, the both IP can be access from pod
% oc rsh -n test hello-pod
~ $ ping 147.75.55.145
PING 147.75.55.145 (147.75.55.145) 56(84) bytes of data.
64 bytes from 147.75.55.145: icmp_seq=1 ttl=56 time=1.62 ms
64 bytes from 147.75.55.145: icmp_seq=2 ttl=56 time=0.914 ms
^C
--- 147.75.55.145 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 0.914/1.267/1.621/0.353 ms
~ $ ping 2604:1380:4642:7e00::1f
PING 2604:1380:4642:7e00::1f(2604:1380:4642:7e00::1f) 56 data bytes
64 bytes from 2604:1380:4642:7e00::1f: icmp_seq=1 ttl=56 time=4.55 ms
64 bytes from 2604:1380:4642:7e00::1f: icmp_seq=2 ttl=56 time=1.38 ms

4. Apply egressfirewall to namespace test
% oc get egressfirewall -n test -o yaml 
apiVersion: v1
items:
- apiVersion: k8s.ovn.org/v1
  kind: EgressFirewall
  metadata:
    creationTimestamp: "2023-03-07T10:41:31Z"
    generation: 1
    name: default
    namespace: test
    resourceVersion: "167405"
    uid: 1bd67ce0-02be-48cf-88d5-8de5bc62a639
  spec:
    egress:
    - to:
        nodeSelector:
          matchLabels:
            region: east
      type: Allow
    - to:
        cidrSelector: 0.0.0.0/0
      type: Deny
    - to:
        cidrSelector: ::/0
      type: Deny
kind: List
metadata:
  resourceVersion: ""
5. Label region=east to node
 % oc label node worker-00.jkuriakonew-0703.qe.devcluster.openshift.com region=east 
node/worker-00.jkuriakonew-0703.qe.devcluster.openshift.com labeled

6. Check ovn db, related acls added
sh-5.1# ovn-nbctl --data=bare --no-heading   find acl external_ids=egressFirewall=test  
7a1bc791-5c22-47ee-9236-e72764ae4cae
allow
to-lport
egressFirewall=test
0
false
(ip4.dst == 147.75.55.145 || ip4.dst == 2604:1380:4642:7e00::1f) && ip4.src == $a18302404499086943635
acl-logging
egressFirewall_test_10000

10000


588afdf4-58da-4446-93f6-0ea76591e1a7
drop
to-lport
egressFirewall=test
0
false
(ip4.dst == 0.0.0.0/0 && ip4.dst != 10.128.0.0/14) && ip4.src == $a18302404499086943635
acl-logging
egressFirewall_test_9999

9999


7b90e0f5-db47-404a-adb8-02c947c50bf2
drop
to-lport
egressFirewall=test
0
false
(ip6.dst == ::/0 && ip6.dst != fd01::/48) && ip6.src == $a18302406698110200057
acl-logging
egressFirewall_test_9998

9998

7. From pod to access both node addresses again

Got blocked.
% oc rsh -n test hello-pod                                                        
~ $ ping   147.75.55.145
PING 147.75.55.145 (147.75.55.145) 56(84) bytes of data.
^C
--- 147.75.55.145 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2040ms

~ $  ping 2604:1380:4642:7e00::1f
PING 2604:1380:4642:7e00::1f(2604:1380:4642:7e00::1f) 56 data bytes
^C
--- 2604:1380:4642:7e00::1f ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1048ms

Should be able to access nodeIP