diff --git a/build/build.sh b/build/build.sh
index 383d7c7..a99712f 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION=0.1.0-18
+VERSION=0.1.1-2
 
 cd debian
 ./build.sh $VERSION > /dev/null
diff --git a/build/openwrt/build.sh b/build/openwrt/build.sh
index 1c7901d..0cc672a 100755
--- a/build/openwrt/build.sh
+++ b/build/openwrt/build.sh
@@ -21,7 +21,7 @@ Version: $VERSION
 Section: net
 Priority: optional
 Architecture: all
-Depends: xl2tpd, curl
+Depends: xl2tpd, libcurl
 Maintainer: Zeno Zeng <zenoofzeng@gmail.com>
 Description: Command Line Scripts for ZJU
  This script provides a VPN / WLAN / NEXTHOP for ZJUer.
@@ -29,7 +29,7 @@ EOF
 
 # dpkg-deb
 find ./debian -type d | xargs chmod 755
-dpkg-deb -Zgzip --build debian
+dpkg-deb -Zgzip --build debian # for opkg
 mv debian.deb zjunet_${VERSION}_all.opk
 
 # remove debian/
diff --git a/lib/route.sh b/lib/route.sh
index 3e8bb99..6fe24f5 100755
--- a/lib/route.sh
+++ b/lib/route.sh
@@ -56,15 +56,6 @@ if [ "${devs_count}" -eq "0" ]; then
     return
 fi
 
-flush() {
-    # see also: https://github.com/QSCTech/zjunet/issues/39
-    ip route flush 10.5.1.5
-    ip route flush 10.5.1.7
-    ip route flush 10.5.1.9
-}
-
-flush
-
 ip route replace 10.5.1.0/24 via $gateway # for LNS
 ip route replace 10.10.0.0/24 via $gateway # for DNS
 
diff --git a/lib/vpn.sh b/lib/vpn.sh
index 885ea04..7a3c9a1 100755
--- a/lib/vpn.sh
+++ b/lib/vpn.sh
@@ -23,6 +23,14 @@
 
 BASEDIR=$(dirname $0)
 
+flush() {
+    # see also: https://github.com/QSCTech/zjunet/issues/39
+    ip route flush 10.5.1.5
+    ip route flush 10.5.1.7
+    ip route flush 10.5.1.9
+    ip route flush 10.5.6.2
+}
+
 disconnect() {
     users=$("${BASEDIR}/user.sh" getall)
     for username in $users; do
@@ -40,6 +48,7 @@ connect() {
         password=$("${BASEDIR}/user.sh" getpwd $username)
         echo "[INFO] Login using ${username}"
         "${BASEDIR}/xl2tpd.sh" connect $username $password
+        flush
     done
 
     "${BASEDIR}/route.sh"
diff --git a/lib/zjunet.sh b/lib/zjunet.sh
index 623b047..d443722 100755
--- a/lib/zjunet.sh
+++ b/lib/zjunet.sh
@@ -41,7 +41,7 @@ case "$1" in
         "${BASEDIR}/dns.sh"
         ;;
     --version)
-        echo "zjunet version: zjunet-0.1.0"
+        echo "zjunet version: zjunet-0.1.1"
         ;;
     *)
         cat <<EOF