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user98651
Asked: 2013-01-14 13:48:35 +0800 CST

Outbound traffic from domU shows dom0 IP address

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I am having a problem with Xen where all outbound traffic from domU's are showing up as if it was coming from the dom0. Traffic passes both ways without a problem. I do not have NAT enabled. I am using bridging network mode.

Any ideas on how to troubleshoot this issue, or what the problem might be?

networking

1 Answers

  1. Best Answer

    I figured it out! Turns out there was, in fact, POSTROUTING options in place through iptables. Deleting them quickly settled the issue, and all source addresses appear as they should. I thought I cleared out everything by using iptables -F and then service iptables save (to save my configuration changes). However the rules did not show up when using the command iptables -L. That showed no rules.

    For whatever reason, using service iptables status displayed everything. Maybe someone can help explain the difference there.

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