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Thread: PING returns no result for unreachable hosts

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  1. #1
    Join Date
    Dec 2012
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    2

    Question PING returns no result for unreachable hosts

    Dear all,

    I have installed Ubuntu 11.04 on a VMWare Virtual Machine. Everything is fine except for the PING command that does not return any output for unreachable hosts.
    For all available hosts, regardless of calling ping with a hostname or an ip address, it works just fine. However, it does not return any response for unreachable hosts.

    Apache Hadoop uses PING as a tool for checking host availability and I need to have it working for this purpose.

    If you know a solution for this problem or the way that I can change the default timeout of PING requests permanently, please let me know.

  2. #2
    Join Date
    Oct 2009
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    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: PING returns no result for unreachable hosts

    Do you have a firewall that is blocking everything except for the echo-reply?
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

    Tomorrow's an illusion and yesterday's a dream, today is a solution...

  3. #3
    Join Date
    Dec 2012
    Beans
    2

    Re: PING returns no result for unreachable hosts

    I am sure that this problem is not caused by the firewall, as I have stopped the firewall, but the output did't change.
    Moreover, the PING command on my host operating system (Mac OS) is working fine for both reachable and unreachable hosts.

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