Bug 127548
| Summary: | SNAT rule works only for a short time | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Adi Linden <adi> |
| Component: | kernel | Assignee: | David Miller <davem> |
| Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> |
| Severity: | high | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | CC: | petrides |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2007-10-19 19:22:50 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
This is a netfilter kernel problem, not a optables userland problem. This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7b) Gecko/20040316 Description of problem: I am using LVS-NAT on a RedHat AS3.0 server. The lvs part appears to be working ok. One of the servers behind the LVS director is a mail server. Outbound connections originating from the mail server need to be translated to the virtual ip of the mail server, not the ip of the redirect server. To accomplish this I installed a SNAT rule on the director like this: iptables -v -t nat -I POSTROUTING -s 172.28.1.25 -j SNAT --to-source 66.165.220.47 After a reboot the director works just fine for several hours, but eventually the real server looses all connectivity to the outside world. This applies to traffic originating from the server as well as traffic destined for the server and proccessed by LVS rather then iptables. I have been unable to find any cause for this problem. The only thing that brings things back to live is a reboot of the director. Version-Release number of selected component (if applicable): iptables-1.2.8-12.3 How reproducible: Always Steps to Reproduce: 1. Wait for the director to stop passing traffic from the server. There is no apparent trigger, it just quits working. Actual Results: The director no longer passes traffic for the server. The server looses all connectivity to the outside world. Additional info: