Baffling network

[Kevin O'Gorman]

On Mon, Feb 27, 2012 at 7:04 AM, compdoc <compdoc at hotrodpc.com> wrote:
> If you were to look at the file:   /etc/udev/rules.d/70-persistent-net.rules
> you might find that the list of adaptors in the file is messed up. It's a
> problem I've seen several times when I add or remove adaptors a few times.
>
> All you need to do is delete the list of nics from this file and reboot, and
> Ubuntu will recreate the list. Of course, afterwards, you should have eth0
> and eth1 back, so you might need to tweak your network settings in
> /etc/network/interfaces     if you use static settings.

Thanks for replies.  This is helpful.  To answer some questions
-- yes, I have two interfaces, one onboard.  Onboard is connected to
my wireless router, which is connected to the cable modem.  The other
is directly connected to DSL.

-- Looking at the kernel logs, I see that the kernel renames eth0 and
eth1.  Apparently incompletely.  I'll try removing the file mentioned
in replies and see if this clears up.

I probably won't pursue this thread any more.  Just after posting the
question, I disconnected DSL and reconfigured "Network Connections"
for the cable modem, and the system is working with the internet okay.
 I'm gonna ditch the 10/100 daughter card and go with onboard gigabit
e-net, dropping the DSL, landline and all.  Bye-bye ATT and a big
phone bill.

I'm now just getting my router to work with dynamic DNS, so I can have
incoming connections to apache.  It appears my router has builtin
support for dyndns.org (and no other) so I'll have to pay for it.  I
have to have a router because there are other machines in this
connection, and the host with apache is not always available to do
that job.  I'll be asking about this in a separate thread.

Once again, thanks for the replies.

-- 
Kevin O'Gorman, PhD