There is an regression issue for ovnkube-trace compatibility.

I tried on 4.13.6, the ovnkube-trace binary file can be used on RHEL8.6, only has issue for 'pip3 not available', same to https://issues.redhat.com/browse/OCPBUGS-15914 

But on 4.13.7, ovnkube-trace binary file cannot be used on RHEL8.6 any more, with below glibc error:
./ovnkube-trace: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by ./ovnkube-trace) 
./ovnkube-trace: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by ./ovnkube-trace)

4.13.7

always

1. install OCP4.13.7

2. copy ovnkube-trace binary file from ovnkube-master pod to local
$ POD=$(oc get pods -n openshift-ovn-kubernetes -l app=ovnkube-master -o name | head -1 | awk -F '/' '{print $NF}')
$ oc cp -n openshift-ovn-kubernetes $POD:/usr/bin/ovnkube-trace ovnkube-trace
Defaulted container "northd" out of: northd, nbdb, kube-rbac-proxy, sbdb, ovnkube-master, ovn-dbchecker
tar: Removing leading `/' from member names
$ chmod +x ovnkube-trace  $ ls -l ovnkube-trace 
-rwxrwxr-x. 1 cloud-user cloud-user 45947136 Sep 14 03:10 ovnkube-trace

3. run ovnkube-trace help
$ ./ovnkube-trace -h

$ ./ovnkube-trace -h 
./ovnkube-trace: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by ./ovnkube-trace) 
./ovnkube-trace: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by ./ovnkube-trace)

ovnkube-trace can be used on RHEL8.6