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https://issues.apache.org/jira/browse/CLOUDSTACK-10317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16387875#comment-16387875
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ASF GitHub Bot commented on CLOUDSTACK-10317:
---------------------------------------------
ustcweizhou commented on a change in pull request #2476: CLOUDSTACK-10317: Fix
SNAT rules for additional public nics
URL: https://github.com/apache/cloudstack/pull/2476#discussion_r172535132
##########
File path: systemvm/debian/opt/cloud/bin/cs/CsAddress.py
##########
@@ -388,7 +388,7 @@ def fw_router(self):
self.fw.append(["mangle", "",
"-A VPN_%s -j RETURN" % self.address['public_ip']])
self.fw.append(["nat", "",
- "-A POSTROUTING -o eth2 -j SNAT --to-source %s" %
self.address['public_ip']])
+ "-A POSTROUTING -o %s -j SNAT --to-source %s" %
(self.dev, self.address['public_ip'])])
Review comment:
@DagSonsteboSB yes, I think the outgoing IP for the vms without static nat
should be the source nat IP, in your example 10.100.1.10
In my point of view, the rules applied on ethernet other than eth2 (for
example eth3) are not needed at all, however it is not harmful to have them.
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> In case of multiple-public ips, snat fails to work for addtional public
> nics/network for guest traffic
> ------------------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-10317
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10317
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Reporter: Rohit Yadav
> Assignee: Rohit Yadav
> Priority: Minor
> Fix For: 4.12.0.0, 4.11.1.0
>
>
> If a VR has two+ public nics, traffic from guest VM fails to be NAT-ed
> correctly for traffic towards additional public nics.
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