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https://issues.apache.org/jira/browse/TS-2530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887247#comment-13887247
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ASF subversion and git services commented on TS-2530:
-----------------------------------------------------
Commit 666bb424786c4dc7f8816fb5568abb3d124b96f1 in branch refs/heads/5.0.x from
[~amc]
[ https://git-wip-us.apache.org/repos/asf?p=trafficserver.git;h=666bb42 ]
TS-2530 - CHANGES not correct, fixed.
> False positive detected for Multi-Hop cycle when using private IP
> -----------------------------------------------------------------
>
> Key: TS-2530
> URL: https://issues.apache.org/jira/browse/TS-2530
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Reporter: Ron Barber
> Assignee: Alan M. Carroll
> Fix For: 4.2.0
>
> Attachments: TS-2530.patch
>
>
> With hosts A and B running ATS where both hosts have private IPs (10.0.0.1 &
> 10.0.0.2) AND have a local loopback which have a public IP 27.1.1.1 we are
> getting HTTP/1.1 400 Multi-Hop Cycle Detected when host A forwards a request
> to host B.
> ATS searches the incoming Via header for its own ip address
> (Machine::instance()->ip_hex_string) to determine if the request has been
> forwarded back to itself.
> Cause: ATS is selecting the public IP address of the server to insert in the
> Via header (even if it's not on a routable interface).
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