queer dns access problem

[Bill Tangren]

> On Dec 13, 2007 8:02 AM, Bill Tangren <bjt at usno.navy.mil> wrote:
>
>> >
>> > OK. Is the /8 netmask a cut and paste error too?
>>
>> No, it is correct.
>>
>> >
>> > Your trouble could be a routing issue: 10.1.5.58/8 and 10.1.1.46/8 are
>> > on the same subnet as far as the network layer is concerned so there
>> is
>> > no reason to go to the default route.  Thats why I asked for a
>> > traceroute too -- or mtr if you have it installed and it will work.
>> >
>> > # mtr -rnc 10 DNS.SERVER.IP.ADDRESS
>> >
>> > What netmask is the firewall using for the interface?
>>
>>
>> When the network guy comes in this afternoon, I'll ask. This still
>> doesn't
>> explain why it works for one machine, but not the other, when both are
>> set
>> the same.
>
> I am assuming you've done the usual stuff
>
> double checked /etc/resolv.conf
>
> checked /etc/nsswitch.conf


Did these two.

>
> Pinged the default gateway.
>

Ping is shut off on the gateway. I'll ask the firewall guy to turn it on
long enough to test this.

> Checked the network cabling back to the switch.

Yes, other computers work just fine with this cabling.

>
> Checked the patch cable.
>

Patch cable? What is that?

> ifconfig to make sure the interface is actually up.
>

yep.

> ethtool to check that speed and duplex are as expected.
>

Didn't think to do this. Will try it on Monday.

> Can't think of anything else offhand.
>

Thanks for the help.

> --
> Stephen Carville
>