Re: name resolution problem when using wired connection for VPN

From: Rick Stevens (rstevens_at_vitalstream.com)
Date: 03/04/05

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    Date: Thu, 03 Mar 2005 16:15:47 -0800
To: For users of Fedora Core releases <fedora-list@redhat.com>

    Scot L. Harris wrote:
    > On Thu, 2005-03-03 at 14:06, Scot L. Harris wrote:
    >
    >>On Thu, 2005-03-03 at 13:19, Rick Stevens wrote:
    >>
    >>>Scot L. Harris wrote:
    >>>
    >>>>This is an odd problem.
    >>
    >>>Did you check iptables and make sure that it's not blocking eth0 stuff
    >>>(the wireless is probably wlan0 and may be wide open).
    >>
    >>Good idea! Will check that. The wireless comes up as eth1 and the
    >>wired connection is eth0. But it could be something in iptables. Will
    >>check that.
    >
    >
    > Don't see anything in iptables that would block name resolution when the
    > VPN is active on the wired port.
    >
    > I tried disabling iptables as well and no change.
    >
    > I forgot to include in the first message that IP connectivity works with
    > VPN and wired connection. I can ping the name servers but queries time
    > out.

    Hmmm. Interesting. Normally a VPN is set up point-to-point. Is the
    DNS server on the network that you're VPNing (is that a word?) to?

    The other thing is the default route. You didn't say if both interfaces
    are active when DNS doesn't work. I'd suspect that the default route
    got wonked when eth0 came up with the VPN and you aren't actually
    getting to the DNS server you think you are.
    ----------------------------------------------------------------------
    - Rick Stevens, Senior Systems Engineer rstevens@vitalstream.com -
    - VitalStream, Inc. http://www.vitalstream.com -
    - -
    - "And on the seventh day, He exited from append mode." -
    ---------------------------------------------------------------------- 

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