This bug was initially created as a copy of Bug #1933752

Description of problem:

Many (Not all) ovnkube-node-<id>/ovn-controller containers logs a lot of errors like this:

2021-03-01T13:53:49.448605634Z 2021-03-01T13:53:49Z|365512|ofp_actions|WARN|"conjunction" actions may be used along with "note" but not any other kind of action (such as the "set_field" action used here)
2021-03-01T13:53:49.448605634Z 2021-03-01T13:53:49Z|365513|ofctrl|INFO|OpenFlow error: OFPT_ERROR (OF1.5) (xid=0x2c2b96): NXBAC_BAD_CONJUNCTION
2021-03-01T13:53:49.448605634Z OFPT_FLOW_MOD (OF1.5) (xid=0x2c2b96): ***decode error: NXBAC_BAD_CONJUNCTION***
2021-03-01T13:53:49.448605634Z 00000000  06 0e c8 58 00 2c 2b 96-00 00 00 00 00 00 00 00 |...X.,+.........|
2021-03-01T13:53:49.448605634Z 00000010  00 00 00 00 00 00 00 00-2c 02 00 00 00 00 07 d1 |........,.......|

Also observed in ovs-node-<id>/ovs-daemons container 

2021-03-01T13:53:55.655987139Z 2021-03-01T13:53:55.655Z|385742|connmgr|INFO|Dropped 19 log messages in last 6 seconds (most recently, 1 seconds ago) due to excessive rate
2021-03-01T13:53:55.655987139Z 2021-03-01T13:53:55.655Z|385743|connmgr|INFO|br-int<->unix#0: sending NXBAC_BAD_CONJUNCTION error reply to OFPT_FLOW_MOD message
2021-03-01T13:53:55.658734434Z 2021-03-01T13:53:55.657Z|385744|ofp_actions|WARN|"conjunction" actions may be used along with "note" but not any other kind of action (such as the "set_field" action used here)

Version-Release number of selected component (if applicable):
OCP 4.6.15
OSP 16.1


Additional info:
Seems to be similar to https://bugzilla.redhat.com/show_bug.cgi?id=1840556

[dcbw] These issues were fixed in ovn-20.09.0-4 and later, which 4.7 and 4.8 have been running for 4+ months already.