diff --git a/usr.sbin/unbound/setup/local-unbound-setup.sh b/usr.sbin/unbound/setup/local-unbound-setup.sh
--- a/usr.sbin/unbound/setup/local-unbound-setup.sh
+++ b/usr.sbin/unbound/setup/local-unbound-setup.sh
@@ -261,6 +261,7 @@
 	if [ "${use_tls}" = "yes" ] ; then
 		echo "        tls-cert-bundle: /etc/ssl/cert.pem"
 	fi
+	echo "        so-sndbuf: 0"
 	echo ""
 	if [ -f "${forward_conf}" ] ; then
 		echo "include: ${forward_conf}"