Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.os.linux.hardware > #322
| From | J G Miller <miller@yoyo.ORG> |
|---|---|
| Newsgroups | comp.os.linux.hardware |
| Subject | Re: Network configuration problem Mythbuntu 10.10 |
| Date | 2011-05-06 16:22 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <iq178c$fng$7@dont-email.me> (permalink) |
| References | (4 earlier) <ipujvd$utq$1@speranza.aioe.org> <ipv5a6$udt$3@dont-email.me> <ipvd9e$u6h$1@speranza.aioe.org> <ipveqg$su0$1@dont-email.me> <ipvkla$eab$1@speranza.aioe.org> |
On Friday, May 6th, 2011 at 02:59:06 +0100, Richard Evans wrote:
> I just found something really stupid. I have an old cable router that
> I'm now using as a network switch, and it was set to the same address as
> the Netgear router I'm using for my network connection. So rather
> surprising that I haven't come across any problems before. Doah!!!!
So Richard Kettlewell I think it was, was correct when he voice his
suspicion of two devices having the same IP address.
May I make a suggestion? You should sit down and make a list of
all your network devices and MAC addresses and put these into
/etc/hosts and /etc/ethers.
And it would be a good idea to organise your numbering so that for
example (this is the scheme I use and is not intended to be
any way authoritative)
routers and
network devices .1-10
hosts .11-19
printers .20-29
media devices .30-39
DHCP leases .101-199
As I say you can use your own designated groups and ranges,
but by employing some such scheme you will ensure that you
know what IP addreses are in use and avoid such a clash
happening which as you have discovered is in fact extremely
difficult to discover.
> Interestingly the network configuration file didn't have anything in it
> except for the loopback settings. So presumably the system must have
> been getting the default DHCP setup from somewhere else.
From the router of course.
> I have not found any utility called network manager on the 32bit box.
But I thought you said that the entries in /etc/resolv.conf had been
added by network manager.
dpkg -l \* | egrep network | egrep manager
un network-manager <none> (no description available)
un network-manager-dbg <none> (no description available)
un network-manager-dev <none> (no description available)
un network-manager-gnome <none> (no description available)
un network-manager-kde <none> (no description available)
Anything you have installed as such will be indicated by ii in column one.
Then you can use dpkg --purge on it, which in my opinion is the best thing
to do with network manager (except on roaming laptop PCs of course).
And then you may be able to purge dhcp(3?)-client as well because it is no longer
needed but a metapackage dependency may prevent that.
> For this reason I have been wondering whether it may be worth reinstalling
> everything from scratch and using the Gnome desktop
Why would you have to reinstall from scratch just to install the GNOME dekstop,
this is not Windoze you know ;)
Just apt-get gnome-{whatever} to install the GNOME desktop. But if you go
for the top level metapackage it will install everything including network
manager again which will have to be purged.
My suggestion would be to install XFCE as a desktop anyways ;)
> So I just opened up a terminal window, and edited the network
> configuration files using the vi text editor.
If you can use vi (actually I would suggest vim with all of the extras
installed so you get color highlighting) then you are not as Linux
unsophisticated as you pretend ;)
> Only my laptop and my printer are setup to use DHCP.
> (My printer doesn't seem to work if I use a static address, buggy
> drivers I think).
This makes no sense at all to me. Once the IP address has been assigned,
the printer will not care if the IP address has been assigned dynamically
by DHCP or statically by hand.
I presume you are using CUPS?
> I started at address 100 for my Squeezeboxes, currently I have 4 using
> 100-103.
Which model? The Transporter {SE?} ??!!!????
And can they play FLAC and OGG files?
> I set my 32 bit box to 160 because at the time I *couldn't remember*
> whether my Squeezeboxes where starting a 100 or 150.
See my suggestion right at the start about organisation! ;)
> This is one of the few things about IP settings that I don't
> quite understand.
Do you mean in resolv.conf?
The domain setting in resolv.conf is stating the name of your
local domain (on your LAN). So if you have an entry tiscali.co.uk
you are claiming that the machines on your LAN are part of the
tiscali.co.uk domain space.
So say you have a machine called 32bit, then its FQDN would become
32bit.tiscali.co.uk and you point your DNS to your router which
I suspect is just a caching (store and forward) DNS server from the
tiscali.co.uk DNS server.
When you also add the Search directive tiscali.co.uk, what this means
is that when you do a DNS query for a host name which is not FQDN,
it will tag on that search domain to the host name to make it FQDN.
So when you do a DNS query for 32bit, it tries to do a DNS query
for 32bit.tiscali.co.uk via the tiscali.co.uk DNS server. Since
Tiscali company have no entry for such a machine, then the DNS query will
fail.
My suggestion is that you setup up your own DNS server on your 64 bit
machine server which is authoritative for your own local unofficial
domain rpevans.co.uk and it does lookups for everything else via the
top level servers, thereby avoiding Tiscali DNS completely.
Obviously you have to be careful that your own fake internal domain
evans.co.uk never leaks out on to the real network by asking your router
DNS instead of your own 64bit DNS server or via e-mail headers.
Of course if you have purchased a real domain name you could use that,
but again you have to ensure that private internal host names (on 192.168.*)
are not queried via or leaked to external name servers.
Back to comp.os.linux.hardware | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-03 00:36 +0100
Re: Network configuration problem Mythbuntu 10.10 Bit Twister <BitTwister@mouse-potato.com> - 2011-05-03 03:17 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Kettlewell <rjk@greenend.org.uk> - 2011-05-03 14:57 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-03 15:25 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 15:13 +0100
Re: Network configuration problem Mythbuntu 10.10 Michal Jaegermann <michal@gortel.phys.ualberta.ca> - 2011-05-06 09:26 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 15:12 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 15:21 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Kettlewell <rjk@greenend.org.uk> - 2011-05-05 16:36 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 17:41 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Kettlewell <rjk@greenend.org.uk> - 2011-05-05 17:50 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 18:04 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 18:17 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-05 21:37 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 00:53 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-06 00:19 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 02:59 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-06 16:22 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 18:38 +0100
A couple of corections. Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 20:02 +0100
Re: Network configuration problem Mythbuntu 10.10 Michal Jaegermann <michal@gortel.phys.ualberta.ca> - 2011-05-08 22:12 +0000
Re: Network configuration problem Mythbuntu 10.10 "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2011-05-05 20:39 -0400
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 03:05 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 15:24 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 16:08 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 16:30 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 16:55 +0100
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 14:59 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-05 15:39 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-05 17:51 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-05 21:43 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 00:58 +0100
Re: Network configuration problem Mythbuntu 10.10 J G Miller <miller@yoyo.ORG> - 2011-05-06 00:24 +0000
Re: Network configuration problem Mythbuntu 10.10 Richard Evans <rp.evans.nospam@tiscali.co.uk> - 2011-05-06 01:51 +0100
csiph-web