for me doing a bindfs mount on top of the webdav mount and then mounting the ecryptfs on the bindfs mount worked.
mount.davfs https://dav.box.com box bindfs box/dav /crypt mount -t ecryptfs /crypt /decrypt
for me doing a bindfs mount on top of the webdav mount and then mounting the ecryptfs on the bindfs mount worked.
mount.davfs https:/ /dav.box. com box
bindfs box/dav /crypt
mount -t ecryptfs /crypt /decrypt