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https://issues.apache.org/jira/browse/TS-4535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Jackson resolved TS-4535.
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Resolution: Fixed
> segfault in hostdb for serve_stale_for with no hostname
> -------------------------------------------------------
>
> Key: TS-4535
> URL: https://issues.apache.org/jira/browse/TS-4535
> Project: Traffic Server
> Issue Type: Bug
> Components: HostDB
> Affects Versions: 5.3.2, 6.1.1
> Reporter: Thomas Jackson
> Assignee: Thomas Jackson
> Fix For: 7.0.0
>
>
> Before starting the background continuation to refresh the IP hostdb attempts
> to verify that the request is `!is_dotted_form_hostname`, in the reverse-dns
> case there is no hostname so the method segfaults. Regardless of format, if
> the record is expired and we are configured to serve stale while
> revalidating-- we should do just that.
> Note: it seems that this bug has always existed (since original
> open-sourcing).
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