On Mon, Mar 28, 2022 at 02:08:31PM +0000, Chuck Lever III wrote: > Note also that the protocol allows a CLID_INUSE response to return > the IP address of the conflicting client, but NFSD doesn't do that, > I guess as a security measure. The information disclosure sounds mild and not too surprising--mountd already hands out information about v2/v3 clients (used by "showmount"). Chances are we just didn't get around to it. If it'd help debug this kind of problem, I think it'd be worth it. --b.