Github user rhtyd commented on a diff in the pull request:

    https://github.com/apache/cloudstack/pull/1653#discussion_r75715632
  
    --- Diff: systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py ---
    @@ -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'])])
    --- End diff --
    
    @jburwell there were several places where such minor refactoring could be 
done, I've kept the scope limited to the change in the PR. @NuxRo I've 
refactored it as per John's comment. I'll see if we've an existing marvin test 
for this, otherwise I'll add one tomorrow/later-this-week.


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