diff --git a/systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py b/systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py
index f78ec4c371c5..6b6bdcda449f 100755
--- a/systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py
+++ b/systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py
@@ -397,9 +397,9 @@ def fw_router(self):
             self.fw.append(
                 ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 67 -j ACCEPT" % self.dev])
             self.fw.append(
-                ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 53 -j ACCEPT" % self.dev])
+                ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 53 -s %s -j ACCEPT" % (self.dev, self.address['network'])])
             self.fw.append(
-                ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 53 -j ACCEPT" % self.dev])
+                ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 53 -s %s -j ACCEPT" % (self.dev, self.address['network'])])
             self.fw.append(
                 ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT" % self.dev])
             self.fw.append(
@@ -452,9 +452,9 @@ def fw_vpcrouter(self):
             self.fw.append(
                 ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 67 -j ACCEPT" % self.dev])
             self.fw.append(
-                ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 53 -j ACCEPT" % self.dev])
+                ["filter", "", "-A INPUT -i %s -p udp -m udp --dport 53 -s %s -j ACCEPT" % (self.dev, self.address['network'])])
             self.fw.append(
-                ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 53 -j ACCEPT" % self.dev])
+                ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 53 -s %s -j ACCEPT" % (self.dev, self.address['network'])])
 
             self.fw.append(
                 ["filter", "", "-A INPUT -i %s -p tcp -m tcp --dport 80 -m state --state NEW -j ACCEPT" % self.dev])