rename function

scripts/config

@@ -191,7 +191,7 @@ set__login_passphrase() {
     :
 }
 
-set__ip6_send_over_tun() {
+set__ip6_send_over_tun_enabled() {
   if [[ ${ip6_send_over_tun_enabled} -eq 1 ]]; then
     install -b -o root -g root -m 0755 ../conf/optional-scripts/route-up.d/50-vpnclient-set-ipv6-send-over-tun /etc/openvpn/scripts/route-up.d/
     install -b -o root -g root -m 0755 ../conf/optional-scripts/route-down.d/50-vpnclient-unset-ipv6-send-over-tun /etc/openvpn/scripts/route-down.d/