rpcclient doesn't use the "client ipc min protocol", "client ipc max protocol" and "client ipc signing" options.
Created attachment 12125 [details] Patch for v4-4-test
Created attachment 12126 [details] Patch for v4-3-test
Created attachment 12127 [details] Patch for v4-2-test
Reassigning to Karolin for inclusion in 4.4.next, 4.3.next, 4.2.next.
(In reply to Jeremy Allison from comment #4) Pushed to autobuild-v[4|3|2]-test.
(In reply to Karolin Seeger from comment #5) Pushed to all branches. Closing out bug report. Thanks!