[GRLUG] "network is unreachable"
Bob Kline
bob.kline at gmail.com
Sat Feb 13 17:30:30 EST 2010
On Sat, Feb 13, 2010 at 4:12 PM, lee8oi <lee8oi at gmail.com> wrote:
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> > Today's Topics:
> >
> > 1. Re: "network is unreachable" (Bob Kline)
> > 2. Re: "network is unreachable" (Bob Kline)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Sat, 13 Feb 2010 00:05:34 -0500
> > From: Bob Kline <bob.kline at gmail.com>
> > Subject: Re: [GRLUG] "network is unreachable"
> > To: grlug at grlug.org
> > Message-ID:
> > <d181b7d71002122105g18a037acge92987caff8387fd at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > On Sat, Feb 13, 2010 at 12:02 AM, Michael Mol <mikemol at gmail.com> wrote:
> >
> >
> >> On Fri, Feb 12, 2010 at 11:54 PM, Bob Kline <bob.kline at gmail.com>
> wrote:
> >>
> >>> On Fri, Feb 12, 2010 at 11:45 PM, Michael Mol <mikemol at gmail.com>
> wrote:
> >>>
> >>>> On Fri, Feb 12, 2010 at 11:38 PM, Bob Kline <bob.kline at gmail.com>
> >>>>
> >> wrote:
> >>
> >>>>> On Fri, Feb 12, 2010 at 5:20 PM, Michael Mol <mikemol at gmail.com>
> >>>>>
> >> wrote:
> >>
> >>>>>> On Fri, Feb 12, 2010 at 5:19 PM, Bob Kline <bob.kline at gmail.com>
> >>>>>>
> >> wrote:
> >>
> >>>>>>> On Thu, Feb 11, 2010 at 1:03 PM, <donlumber at comcast.net> wrote:
> >>>>>>>
> >>>>>>>> ----- Original Message -----
> >>>>>>>> From: "Bob Kline" <bob.kline at gmail.com>
> >>>>>>>> To: grlug at grlug.org
> >>>>>>>> Sent: Wednesday, February 10, 2010 10:03:18 PM GMT -05:00
> >>>>>>>>
> >> US/Canada
> >>
> >>>>>>>> Eastern
> >>>>>>>> Subject: [GRLUG] "network is unreachable"
> >>>>>>>>
> >>>>>>>> I somehow managed to hose the
> >>>>>>>> Ethernet connect on a laptop running
> >>>>>>>> Ubuntu 9.10. The bottom line is that
> >>>>>>>> when I try to ping an outside URL I get
> >>>>>>>> "network is unreachable." I've done
> >>>>>>>> some searching on the Internet for
> >>>>>>>> this, but so far nothing clicks.
> >>>>>>>> Some relevant things:
> >>>>>>>> * ifconfig shows that eth0, lo, and wan0
> >>>>>>>> are gone, so I set them all to "up."
> >>>>>>>> * /etc/resolv.conf looks OK.
> >>>>>>>> * I can ping 127.0.0.1, but nothing outside.
> >>>>>>>> * "/sbin/dhclient wlan0" was not running,
> >>>>>>>> so I started it.
> >>>>>>>> * I've done other A-B comparisons with
> >>>>>>>> a machine also running Ubuntu 9.10,
> >>>>>>>> and has a working eth0 port, but so far
> >>>>>>>> nothing has shown me the key thing
> >>>>>>>> that is missing.
> >>>>>>>> One suggestion on the Internet was to
> >>>>>>>> use dhcpcd, but I don't have it installed,
> >>>>>>>> and can't do it now. The machine does
> >>>>>>>> not have a CDROM unit, and of course I
> >>>>>>>> don't have Internet access.....
> >>>>>>>> Does this much suggest anything to try
> >>>>>>>> to anyone? I've power cycled, but some
> >>>>>>>> software might be missing, and when
> >>>>>>>> I come back up I have to run ifconfig again
> >>>>>>>> to set things up.
> >>>>>>>> -- Bob
> >>>>>>>>
> >>>>>>>> _______________________________________________ grlug mailing list
> >>>>>>>> grlug at grlug.org
> >>>>>>>> http://shinobu.grlug.org/cgi-bin/mailman/listinfo/grlug
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> Have you tried removing /etc/udev/rules.d/70-persistent-net.rules
> >>>>>>>>
> >> ?
> >>
> >>>>>>> I tried it, and a new file was generated.
> >>>>>>> But I still get "Network is unreachable"
> >>>>>>> when I try to ping anything other than
> >>>>>>> 127.0.0.1
> >>>>>>> -- Bob
> >>>>>>>
> >>>>>> As root, what's the output of "ifconfig" and "route"?
> >>>>>> --
> >>>>>>
> >>>>> ifconfig: lo - loopback - is the only thing that appears.
> >>>>> route: the column headings show, but there are
> >>>>> no contents.
> >>>>> Both on bootup.
> >>>>> -- Bob
> >>>>>
> >>>> ls /sys/class/net/
> >>>>
> >>>>
> >>>>
> >>> eth0 lo wlan0
> >>> and those each point to something in /devices.
> >>> -- Bob
> >>>
> >> Grab a flash drive. Get NetworkManager reinstalled.
> >>
> >> http://packages.ubuntu.com/karmic/net/network-manager
> >>
> >>
> >
> >
> > Sounds right. More later.
> >
> > -- Bob
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> > ------------------------------
> >
> > Message: 2
> > Date: Sat, 13 Feb 2010 14:37:22 -0500
> > From: Bob Kline <bob.kline at gmail.com>
> > Subject: Re: [GRLUG] "network is unreachable"
> > To: grlug at grlug.org
> > Message-ID:
> > <d181b7d71002131137y5927140m11dff06ab450bec7 at mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Ah yup. Did that. Using a hard
> > drive, but same deal.
> >
> > All's copasetic now.
> >
> > My thanks to all for various suggestions.
> > Some might have meant more to
> > someone more experienced. I have no
> > idea whether I was close before I wimped
> > out and just reinstalled network-manager.
> >
> > Hey, at least I didn't do a complete reinstall.... :-(
> >
> > -- Bob
> >
> >
> >
> >> Grab a flash drive. Get NetworkManager reinstalled.
> >>
> >> http://packages.ubuntu.com/karmic/net/network-manager
> >>
> >> --
> >> :wq
> >> _______________________________________________
> >> grlug mailing list
> >> grlug at grlug.org
> >> http://shinobu.grlug.org/cgi-bin/mailman/listinfo/grlug
> >>
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> > End of grlug Digest, Vol 47, Issue 48
> > *************************************
> >
> Whatever works. I wouldn't call it 'wimping out' I would call it "trying
> the simple things first". Alot of times its something small that can be
> fixed with reinstalling. If you are using Ubuntu or debian you can use
> 'dpkg-reconfigure <package-name>' to reconfigure without reinstalling
> the package. This works in most cases for me.
>
> Don't worry about the lack of experience. Only time gives you that. The
> more time you spend, the more familiar you become. You've got your foot
> in the door. Now we're gonna hook you, reel you in, make you a geek, and
> soon you'll answer all the questions, and do our bidding muahaha! just
> kidding :) Glad you fixed your problem so easily. Good Day!
> _______________________________________________
>
Like most things, it's easy after you know how.....
But yes, there no shortcut for just diving in, and
the worst that can happen to you is that you
reload.
-- Bob
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