1. [sig-network][Feature:EgressFirewall] egressFirewall should have no impact outside its namespace [Suite:openshift/conformance/parallel] 
2. [sig-network][Feature:EgressFirewall] when using openshift ovn-kubernetes should ensure egressfirewall is created [Suite:openshift/conformance/parallel]

The issue arises during the execution of the above tests and appears to be related to the image in use, specifically, the image located at https://quay.io/repository/redhat-developer/nfs-server?tab=tags&tag=1.1 (quay.io/redhat-developer/nfs-server:1.1). 
This image does not include the 'ping' executable for the s390x architecture, leading to the following error in the prow job logs:
...
msg: "Error running /usr/bin/oc --namespace=e2e-test-no-egress-firewall-e2e-6mg9v --kubeconfig=/tmp/configfile3768380277 exec dummy -- ping -c 1 8.8.8.8:\nStdOut>\ntime=\"2023-10-11T19:04:52Z\" level=error msg=\"exec failed: unable to start container process: exec: \\\"ping\\\": executable file not found in $PATH\"\ncommand terminated with exit code 255\nStdErr>\ntime=\"2023-10-11T19:04:52Z\" level=error msg=\"exec failed: unable to start container process: exec: \\\"ping\\\": executable file not found in $PATH\"\ncommand terminated with exit code 255\nexit status 255\n"
...

Our suggest fix: build new s390x image that contains ping binary.

The issue is reproducible when the test container (quay.io/redhat-developer/nfs-server:1.1) is scheduled on an s390x node, leading to test failures.

1.Have a multi-arch cluster (x86 + s390x day2 worker node attached)
2.Execute the two tests
3.Try few times to make the pod assigned to s390x node

Run #0: Failed expand_less30s{  fail [github.com/openshift/origin/test/extended/networking/egress_firewall.go:70]: Unexpected error:
    <*fmt.wrapError | 0xc005924300>: 
    Error running /usr/bin/oc --namespace=e2e-test-no-egress-firewall-e2e-6r9zh --kubeconfig=/tmp/configfile3961753222 exec dummy -- ping -c 1 8.8.8.8:
    StdOut>
    time="2023-10-12T07:17:02Z" level=error msg="exec failed: unable to start container process: exec: \"ping\": executable file not found in $PATH"
    command terminated with exit code 255
    StdErr>
    time="2023-10-12T07:17:02Z" level=error msg="exec failed: unable to start container process: exec: \"ping\": executable file not found in $PATH"
    command terminated with exit code 255
    exit status 255
    
    {
        msg: "Error running /usr/bin/oc --namespace=e2e-test-no-egress-firewall-e2e-6r9zh --kubeconfig=/tmp/configfile3961753222 exec dummy -- ping -c 1 8.8.8.8:\nStdOut>\ntime=\"2023-10-12T07:17:02Z\" level=error msg=\"exec failed: unable to start container process: exec: \\\"ping\\\": executable file not found in $PATH\"\ncommand terminated with exit code 255\nStdErr>\ntime=\"2023-10-12T07:17:02Z\" level=error msg=\"exec failed: unable to start container process: exec: \\\"ping\\\": executable file not found in $PATH\"\ncommand terminated with exit code 255\nexit status 255\n",
        err: <*exec.ExitError | 0xc0059242e0>{
            ProcessState: {
                pid: 78611,
                status: 65280,
                rusage: {
                    Utime: {Sec: 0, Usec: 168910},
                    Stime: {Sec: 0, Usec: 60897},
                    Maxrss: 206428,
                    Ixrss: 0,
                    Idrss: 0,
                    Isrss: 0,
                    Minflt: 4199,
                    Majflt: 0,
                    Nswap: 0,
                    Inblock: 0,
                    Oublock: 0,
                    Msgsnd: 0,
                    Msgrcv: 0,
                    Nsignals: 0,
                    Nvcsw: 753,
                    Nivcsw: 149,
                },
            },
            Stderr: nil,
        },
    }
occurred
Ginkgo exit error 1: exit with code 1}

Passed

This issue pertains to a specific bug on the s390x architecture and additionally impacts the libvirt-s390x prow job.