Add --flavor=localdns example [#64]

flavors/localdns/connect.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+####################################################################
+# Tunnel only UCSF intranet
+#
+# Install:
+#   mkdir -p ~/.config/ucsf-vpn/flavors/localdns/
+#   cp connect.sh ~/.config/ucsf-vpn/flavors/localdns/
+# 
+# Requires:
+#   https://github.com/HenrikBengtsson/ucsf-vpn
+#
+# Description:
+#   This script overrides parts of the default behavior of
+#   /usr/share/vpnc-scripts/vpnc-script. It's been verified to
+#   to work on Ubuntu 22.04.
+#
+# Authors: Henrik Bengtsson
+# Version: 2024-05-22
+# License: GPL
+####################################################################
+
+#-------------------------------------------------------------------
+# Tweak DNS lookup
+#-------------------------------------------------------------------
+# Tricks modify_resolvconf_generic() to prepend the local nameserver
+# before the ones that the VPN server provides.
+_nameservers_=$(grep "^nameserver[[:blank:]]" /etc/resolv.conf | sed -E 's/nameserver[[:blank:]]+//')
+INTERNAL_IP4_DNS="${_nameservers_} $INTERNAL_IP4_DNS"