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https://issues.apache.org/jira/browse/VCL-816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Kurth resolved VCL-816.
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Resolution: Fixed
> Nmap is very slow due to DNS
> ----------------------------
>
> Key: VCL-816
> URL: https://issues.apache.org/jira/browse/VCL-816
> Project: VCL
> Issue Type: Improvement
> Components: vcld (backend)
> Reporter: Andy Kurth
> Assignee: Andy Kurth
> Priority: Minor
> Fix For: 2.4
>
>
> The backend code uses the nmap utility to determine if a remote node is
> responding to SSH. This may take several seconds if DNS isn't configured.
> There is a "-n" switch which causes the commands to run much quicker.
> The switch should probably be added. We need to test how it works with both
> hostnames and IP addresses.
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