Ha! My /etc/hosts was empty (perhaps an error by Migration Assistant?). Populating it with the /etc/hosts from the host computer (particularly defining localhost) solves the problem.
Many, many thanks for all your timely efforts and considerable help, > On 2018-10 -18, at 19:52, Marc Schwartz <marc_schwa...@me.com> wrote: > > Hi, > <snip> _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
