[ubuntu-us-mn] DNS problem with Ubuntu 10.04?

T L tlunde at gmail.com
Mon Jun 2 02:44:38 UTC 2014


Fred -

It is hard to say what's going on without seeing the DNS entries.

If your system is set to get an address by DHCP, then it likely gets DNS
settings the same way. The default is likely to be your wireless router;
probably 192.168.0.1.

I'd change the DNS settings on both the system (and the router, if
possible, to:
8.8.8.8 and
8.8.4.4

These are the addresses for the Google Public DNS service. It is free &
offers much lower address resolution times (which is a good thing) that the
DNS service from most ISPs. Especially given that you're running over a
wireless service, anything that can be done which will reduce latency will
help you.

Thomas
On Jun 1, 2014 9:16 PM, "Fred H Olson" <fholson at cohousing.org> wrote:

> I use Mpls wireless for my Internet connection.  It works pretty well
> for me most of the time but occasionally it stops working for a minute
> or so (maybe once a month??)  It's hard to monitor.  I have a little
> script that does
> My first step in checking is to
> ping yahoo.com
> When I get a response I know things are working.
>
> Tonight I discovered I couldnt ping yahoo from my computer (nano6)
> but...
>
> I happened to have an ssh connection open to another computer (web02).
> I could ping yahoo from web02
> I used dig yahoo.com to get an IP address for yahoo and pinged that IP
> address on Nano6 successfully.  See edited transcript below.
>
> Any suggestions for exploring further?
>
> Fred
>
>
> nano6:~> ping yahoo.com
> ping: unknown host yahoo.com
>
> web02:~> dig yahoo.com
>
> ; <<>> DiG 9.7.3 <<>> yahoo.com
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38898
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 6, ADDITIONAL: 6
>
> ;; QUESTION SECTION:
> ;yahoo.com.         IN  A
>
> ;; ANSWER SECTION:
> yahoo.com.      1387    IN  A   98.138.253.109
> ...
>
> nano6:~> ping 98.138.253.109
> PING 98.138.253.109 (98.138.253.109) 56(84) bytes of data.
> 64 bytes from 98.138.253.109: icmp_req=1 ttl=49 time=251 ms
> 64 bytes from 98.138.253.109: icmp_req=2 ttl=49 time=157 ms
>
>
> --
> Fred H. Olson  Minneapolis,MN 55411  USA        (near north Mpls)
>      Email:        fholson at cohousing.org      612-588-9532
> My Link Pg: http://fholson.cohousing.org         My org:
> Communications for Justice -- Free, superior listserv's w/o ads
>
>
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