Results 1 to 4 of 4

Thread: Weird network problem with ubuntu only

Threaded View

  1. #1
    Join Date
    Nov 2005
    Beans
    147

    Question Weird network problem with ubuntu only

    I am running out of ideas here.

    I run small home server using ubuntu and dnsmasq.
    Everything worked fine until few days ago, when I noticed I am unable to ssh/ping other ubuntu machine on my private lan.
    To explain:
    • all clients have correct static or dynamic address delivered using DHCP
    • all DNS requests are resolved properly, returning IPv4 addresses as expected
    • all network clients are able to access internet
    • all network clients are able to access the server
    • all non-ubuntu network clients can be pinged, accessed using ssh/http and so on (openWRT, debian)
    • ubuntu clients cannot access other ubuntu clients with the exception of the server


    Example:
    • server IP 192.168.1.1, client1 IP 192.168.1.2 (ubuntu), client2 IP 192.168.1.3 (ubuntu), client3 192.168.1.4(openwrt)
    • on server, ping client1 works fine, ping client2 works fine
    • on client1, ping 192.168.1.1 works fine, ping 192.168.1.3 ends up with "destination host unreachable"
    • on client2, ping 192.168.1.2 ends up with "destination host unreachable"
    • on client1, ping 192.168.1.4 works fine
    • on client3, ping 192.168.1.2 or 192.168.1.3 works fine


    I thought it has something to do with IPv6, but disabling it did not help.
    Also, I am trying to ping/ssh using IPv4 address and hostname with no success here.
    Please, advice what should I look into next.
    Last edited by rklauco; November 17th, 2012 at 08:15 AM. Reason: highlighting the problem

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •