[Podman] --dns=ipaddr - no effect of it

Hi guys. --dns=none renders what expected but with an actual server, say: --dns=10.3.1.200 resolve.conf seems to be the one of the host's, as if --dns did not happen. Can anybody else say that is the case? Am I missing something? I'm on Centos 9 stream with all bits up-to-date. many thanks, L.