Fixes for Raspberry Pi

- Change "start" to "restart", so that the 15-second delay actually works
  (wait for network interfaces to initialize)
- Workaround for Raspbian 9 (requires left=$PRIVATE_IP in ipsec.conf)

vpnsetup.sh

@@ -425,8 +425,8 @@ cat >> /etc/rc.local <<'EOF'
 
 # Added by hwdsl2 VPN script
 (sleep 15
-service ipsec start
-service xl2tpd start
+service ipsec restart
+service xl2tpd restart
 echo 1 > /proc/sys/net/ipv4/ip_forward)&
 exit 0
 EOF
@@ -449,6 +449,15 @@ service fail2ban restart 2>/dev/null
 service ipsec restart 2>/dev/null
 service xl2tpd restart 2>/dev/null
 
+# Workaround for Raspbian 9
+if grep -qs raspbian /etc/os-release; then
+  if [ "$(sed 's/\..*//' /etc/debian_version)" = "9" ]; then
+    PRIVATE_IP=$(ip -4 route get 1 | awk '{print $NF;exit}')
+    check_ip "$PRIVATE_IP" && sed -i "s/left=%defaultroute/left=$PRIVATE_IP/" /etc/ipsec.conf
+    service ipsec restart
+  fi
+fi
+
 cat <<EOF
 
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