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Thread: Ubuntu desktop host can't talk to Ubuntu server guest in Virtualbox

  1. #1
    Join Date
    Mar 2005
    Beans
    70

    [SOLVED] Ubuntu desktop host can't talk to Ubuntu server guest in Virtualbox

    Vitualbox 4.1.12
    Host: Ubuntu 10.04LTS 64bit desktop
    Guest: Ubuntu 10.04LTS 64bit server

    ifconfig on each system shows
    host as 192.168.0.2 on eth1
    vboxnet0 is 10.0.2.1
    guest is 10.0.2.15 on eth0

    Code:
    host$ ping 10.0.2.1
    PING 10.0.2.1 (10.0.2.1) 56(84) bytes of data.
    64 bytes from 10.0.2.1: icmp_seq=1 ttl=64 time=0.095 ms
    64 bytes from 10.0.2.1: icmp_seq=2 ttl=64 time=0.070 ms
    64 bytes from 10.0.2.1: icmp_seq=3 ttl=64 time=0.073 ms
    ^C
    --- 10.0.2.1 ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 1998ms
    rtt min/avg/max/mdev = 0.070/0.079/0.095/0.013 ms
    Code:
    host$ ping 10.0.2.15
    PING 10.0.2.15 (10.0.2.15) 56(84) bytes of data.
    ping: sendmsg: Operation not permitted
    ping: sendmsg: Operation not permitted
    ping: sendmsg: Operation not permitted
    ^C
    --- 10.0.2.15 ping statistics ---
    3 packets transmitted, 0 received, 100% packet loss, time 2007ms
    Code:
    guest$ ping 192.168.0.2
    PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
    64 bytes from 192.168.0.2 icmp_seq=1 ttl=63 time=0.440 ms
    64 bytes from 192.168.0.2 icmp_seq=2 ttl=63 time=1.26 ms
    64 bytes from 192.168.0.2 icmp_seq=3 ttl=63 time=0.548 ms
    ^C
    --- 192.168.0.2 ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 2001ms
    rtt min/avg/max/mdev = 0.440/0.750/1.264/0.367 ms
    I have lost count of the number of web pages and forum posts I have read to try to solve this. I am experienced with Ubuntu but know very little about networking and firewalls, so most of what I've tried I don't understand (and it hasn't worked anyway).

    Eventually I want to host a web server on the guest to be accessed by the host only (no connection to Internet wanted or desirable).

    I would post various other details but I don't know what's relevant, so I'll wait for the usual "post the output of ..." in any replies.

    Can someone take pity on me?
    Last edited by AlanQ; May 15th, 2012 at 03:55 PM. Reason: Solved

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

    Re: Ubuntu desktop host can't talk to Ubuntu server guest in Virtualbox

    Set the guest's network to bridged instead and NAT and you will be set.
    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
    Mar 2005
    Beans
    70

    Re: Ubuntu desktop host can't talk to Ubuntu server guest in Virtualbox

    Thank you, CharlesA, that works!

    Indeed, host-only is perhaps even better for my purposes. If I can get it to work just right...
    [I'll hold off marking this thread SOLVED until then]

    My mistake (although I don't quite understand why this is a problem) was to keep adding Adapters to try to fix the problem.
    So I had
    Adapter1 NAT
    Adapter2 Bridged
    Adapter3 Host-Only

    With only
    Adapter 1 Bridged (or Host-only?) it works.
    Your reply was the prompt I needed to try this.

    Cheers
    Alan

  4. #4
    Join Date
    Oct 2009
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    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Ubuntu desktop host can't talk to Ubuntu server guest in Virtualbox

    host-only lets the VMs talk to each other but not the host iirc.

    http://www.virtualbox.org/manual/ch0...twork_hostonly
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

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

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