Workaround: make ovpn-dco more reliable

Workaround: make ovpn-dco more reliable

This workaround avoids the kernel trigger ENOBUFS when the kernel
internal queue is overrun with events of disconnectingh clients or
similar. This is a workaround until we come up with a more permanent
solution.

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20230112163737.1240059-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg25988.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit f84a9fc5d4ac0f24912d239a3fccf3701926a50c)