srv: nextcloud: only permit 10.0.0.0/8 clients
srv: nextcloud: only permit 10.0.0.0/8 clients

Signed-off-by: Aleksa Sarai <b305c9b0212d6145eea67bbffd24e29cb79c759c@cyphar.com>

cyphar/cyphar.com,cyphar/cyphar.com,cyphar/cyphar.com,cyphar/cyphar.com