Baffled by a Cable Modem, solved again

[Don Vogt]

Date: Sun, 21 Jun 2009 11:10:21 -0400
From: Jim <mickeyboa at sbcglobal.net>
Subject: Re: (no subject)
To: "Community assistance, encouragement,    and advice for using
    Fedora." <fedora-list at redhat.com>
Message-ID: <4A3E4D5D.6080707 at sbcglobal.net>
Content-Type: text/plain; charset="iso-8859-1"

On 06/21/2009 12:51 AM, Armin Moradi wrote:
>
>
> On Sat, Jun 20, 2009 at 7:05 PM, <dnvot at yahoo.com
> <mailto:dnvot at yahoo.com>> wrote:
>
>
>     Message: 8
>     Date: Sat, 20 Jun 2009 10:42:14 -0400
>     From: Mail Lists <lists at sapience.com <mailto:lists at sapience.com>>
>     Subject: Re: Baffled by a Cable Modem
>     To: "Community assistance, encouragement,    and advice for using
>        Fedora." <fedora-list at redhat.com <mailto:fedora-list at redhat.com>>
>     Message-ID: <4A3CF546.6030709 at sapience.com
>     <mailto:4A3CF546.6030709 at sapience.com>>
>     Content-Type: text/plain; charset=ISO-8859-1
>
>     On 06/20/2009 10:38 AM, Jim wrote:
>
>     >> What your forgetting is the mac# from a previous device,
>     Computer ,etc,
>     >> some cable modems will retain that mac # and not connect to any new
>     >> devices until you clear the old one.
>     >>
>
>     > I thought he had connectivity - just not to all hosts - so this
>     sounds
>     >like a red herring.
>
>     I have been trying to follow this line of trouble shooting, but it
>     think it is above my pay grade.
>     But I think you are right about the red-herring. I can ping any
>     one I have tried. I think that means my DHCP and DNS are OK.
>
>     >Could it be DNS problem?  ... firefox caches dns ... so some cached
>     >hosts may work
>     That looks promising. If firefox is cacheing a bad dns, then maybe
>     everything else would work OK except firefox. Maybe, if it cached
>     a google dns, it would work with the google stuff, which it does,
>     but not other sites.
>     However, I also tried dillo, with the same unable to load result.
>     I had an idea of how to check this. I booted the problem computer
>     with fc9 Live-CD. (I think that gives me all clean configuration
>     files) and I had the same problem and gmail still worked.
>
>     I have connected the ethernet cable out of the modem to my old
>     computer ( fc8). I tried to boot, which went OK, except the modem
>     wasn't found. I then  powered down the modem and the computer,
>     then powered them both up and booted.
>     It seems to work fine. (Maybe this computer works on saturdays)
>     To me, it acts like hardware. Next I think I will try putting in
>     an old NIC that I have and see what happens.
>
>
>
>     --
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>
>
> Could someone put a sane subject on this please?  (no subject) doesn't
> make any sense.


> --
> Armin Moradi


done. I apologize . It was just dumb.

> If he is having problems with reaching some websites and not others it
> is a IPV6 DNS problem in Firefox ,
> 1. Do a about:config in Firefox URL and where it says "filter" at top
> put this line  "network.dns.disableIPv6   user set  boolean  true"
> W/O quotes.

> And double check down in body that it is entered correctly.


> 2.  In /etc make a file dhclient-eth0.conf and put in line,
> "prepend domain-name-servers 127.0.0.1; "
> W/o quotes

>If you have a eth1 or wlan0 , you will have to make a file for them,
> just change the eth0 to eth1, wlan0, Etc.

Done, and that seems to have solved it. 
 I re-configured to the motherboard eth interface, made the changes, rebooted and it seems fine. I consider it solved ( I had a thursday before when it worked for a day so I have to run a while to be sure)
 I also put in another NIC and that worked too. So I now have two solutions.
I thank all who helped.
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