docs state, that

"A network policy applies to only the TCP, UDP, and SCTP protocols. Other protocols are not affected."
  
When applying network policies to a pod, also ICMP (ping) is restricted.

    always

    1. create two unselected pods with ping utility installed
    2. ping pod2 from pod1 (result: success)
    3. apply a egress networkpolicy to pod1 (or an ingress networkpolicy to pod2), allowing only port 8080 (i.e)
    4. ping pod2 from pod1 (result: fail)
    

Using OVNKubernetes on Openshift 4.14
This seems to be a doc issue, not a technical issue. only the line "A network policy applies to only the TCP, UDP, and SCTP protocols. Other protocols are not affected." seems to be inaccurate