diff --git a/build/debian/build.sh b/build/debian/build.sh
index 3cbc9ac..32cd388 100755
--- a/build/debian/build.sh
+++ b/build/debian/build.sh
@@ -4,6 +4,10 @@ rm -rf *.deb
 
 VERSION=$1
 
+# share
+mkdir -p ./debian/usr/share/zjunet
+cp ../../miscellaneous/* ./debian/usr/share/zjunet
+
 # lib
 mkdir -p ./debian/usr/lib/zjunet
 cp ../../lib/* ./debian/usr/lib/zjunet
@@ -13,6 +17,32 @@ mkdir -p ./debian/usr/bin
 echo '/usr/lib/zjunet/zjunet.sh "$@"' >> ./debian/usr/bin/zjunet
 chmod +x ./debian/usr/bin/zjunet
 
+# postinst
+mkdir -p debian/DEBIAN
+cat  > debian/DEBIAN/postinst <<EOF
+#!/bin/sh
+
+cp /usr/share/zjunet/qsc.list /etc/apt/sources.list.d/qsc.list
+chmod 644 /etc/apt/sources.list.d/qsc.list
+apt-key add /usr/share/zjunet/qsc.public.key 2>&1 >/dev/null || true
+
+cat <<BANNER
+----------------------------------------------------------------------
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License Version 3 for more details.
+
+You can ask questions, file a bug or make PRs here:
+* https://github.com/QSCTech/zjunet
+
+----------------------------------------------------------------------
+BANNER
+
+EOF
+chmod 755 debian/DEBIAN/postinst
+
 # contorl file
 mkdir -p debian/DEBIAN
 cat > debian/DEBIAN/control <<EOF
diff --git a/lib/route.sh b/lib/route.sh
index 2359123..3d7a9af 100755
--- a/lib/route.sh
+++ b/lib/route.sh
@@ -104,7 +104,7 @@ done
 case "$gateway" in
     10.189.*)
         # WLAN
-        zjuwlan_test_ip=10.202.68.44
+        zjuwlan_test_ip=10.202.68.46
         ip route replace $zjuwlan_test_ip via ${gateway}
         zjuwlan_status=`curl -s $zjuwlan_test_ip | grep net.zju.edu.cn | wc -l`
         if [ $zjuwlan_status -eq 0 ]
diff --git a/lib/version b/lib/version
index dc77645..2b4b7be 100644
--- a/lib/version
+++ b/lib/version
@@ -1 +1 @@
-0.2.3-1
\ No newline at end of file
+0.2.4-1
diff --git a/miscellaneous/qsc.list b/miscellaneous/qsc.list
new file mode 100644
index 0000000..154e15c
--- /dev/null
+++ b/miscellaneous/qsc.list
@@ -0,0 +1,3 @@
+
+deb http://dl.zjuqsc.com/linux/debian stable main
+
diff --git a/miscellaneous/qsc.public.key b/miscellaneous/qsc.public.key
new file mode 100644
index 0000000..622e1d0
--- /dev/null
+++ b/miscellaneous/qsc.public.key
@@ -0,0 +1,30 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+
+mQENBFTWIjMBCADxVTzmEp6T7pT5MiOwcyNQ/AxWf2xsA2ZDugrNrS3GoWRVyowv
+phmgbq7J394cuL/Yw3f03Mw5mmDDEmC6j+FBf63hlLNj/UOeJdCibOSWJd89gbDY
+ETUDtWAU+6xlG8gcoi/Jedy+yXwjcD8P8r3xU9pGt6sbJbSUJBzX9ghtEPdygUnn
+rFG7jHXcbgnCr/mXcCMD59Y0grQvSW6N9B2vyGSrvYU4wlsBAtfJ93PJsd1bG5Oh
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+AwIGFQgCCQoLBBYCAwECHgECF4AACgkQ0qefnxdfAgJfKQgAmtjOp88qBHuguQrb
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+ASZwU/AmkFf7HwWiwJ9l9aBVJkbjtmKDNTlBB/dfSyWTZZPER28+d5tAEQp5kr1b
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+mpSnQGGoBpEh2711IhBofy/0JXikAi0KqeKia0EHZH4ZrWq5nIygCnVeVfa+SaHw
+ltjO2awKG1nJB+xjPTRa+lu84qmczrOQ6rKkILUXdHTBaS10rHQbHCa9x8GSIFVs
+HExKX5SwV9uwcmHN6WVW8zISWZT9qVcvLOcf1cYRWxAHzxKCy0Y=
+=dTq1
+-----END PGP PUBLIC KEY BLOCK-----