https://jenkins-csb-cnvqe-main.dno.corp.redhat.com/job/test-pytest-cnv-4.20-network-full-cap-ovn-dualstack/14/

 Advanced Networking Instability: Network-centric test suites exposed connectivity issues, evidenced by 100% packet loss during ping tests for jumbo frames and some SRIOV scenarios.

we need to do the debug/fix on this issue. Note: log info is attached into this card. 

more info:
Jumbo Frame Connectivity Issues (100% Packet Loss)
Tests involving jumbo frames explicitly logged instances of complete packet loss:
• A test in tests/network/jumbo_frame/test_bond.py showed failure when attempting to ping with large data packets (9100 bytes), resulting in "100% packet loss" (3 packets transmitted, 0 received).
• Another test, TestJumboPodNetworkOnly.test_jumbo_negative_traffic_over_pod_network_with_oversized_traffic, also recorded "100% packet loss" when pinging with 9400 bytes of data (3 packets transmitted, 0 received, +3 errors).
In contrast, other jumbo frame tests in the same suite that used slightly smaller sizes or different configurations reported 0% packet loss and passed.
SRIOV Connectivity Issues (100% Packet Loss)
A specific SRIOV scenario within the tests demonstrated complete connectivity failure:
• An error logged during a test in tests/network/sriov/test_sriov.py showed that a ping command failed, resulting in "3 packets transmitted, 0 received, 100% packet loss". The console message indicated an error running the ping command (Failed to run command ['ping', '-q', '-c', '3', '10.200.3.2'])