firewalld + openvswitch

Hi, After creating openvswitch bridge, there are multiple interfaces ("ovs parts") left. To which firewalld zones they belong? (entire setup is working - I am just researching proper configuration) ovs bridge was created via nmcli, existing interfaces (nmcli c s): br0 - ovs-bridge br0_p01 - ovs-port br0_p02 - ovs-port br0_p01_i - ovs-interface (this is the only one with IP address) ens1 - ethernet (ip a s) shows only ens1 and br0_p01_i interfaces. (firewall-cmd --get-active-zones) shows all of them. The functional interface (br0_p01_i) belongs to zone with whatever its function is (internal, external, dmz, ...). All of the remaining interfaces ended up in public zone (I am guessing NM added them to "default" zone). Can I disable all of the filtering (by firewalld) on the ovs bridge? How? Since ovs is layer 2, than in theory firewalld (which is basicly layer 3 filter) should not be involved at all. Than why assign, a non-layer 3 interfaces to a layer 3 firewall zone? Any insights are welcomed. CentOS 8 was used for this setup.