Alona mentioned that multicast passed in baremetal dual stack v4.6 OVN cluster, I got same results multicast passed in baremetal dual stack v4.6 OVN cluster.
It's a regression bug.
Tested and verified in 4.7.0-0.nightly-2021-03-27-082615
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: OpenShift Container Platform 4.7.5 security and bug fix update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.