Combination of ports/www/apache13, ports/www/mod_dav, and web sites
being updated by ports/www/sitecopy. Since the upgrade to Apache 1.3.31,
WebDAV doesn't work properly any longer. Some debugging and googling
revealed that this is a known Apache bug.
Further links to similar problems on PR.
Over to maintainer.
Note to submitter: Please cc PRs to the maintainer for faster