Networking :: DNS Acting Extremely Weird
Mar 10, 2009
We have a nameserver which we moved over from an old server & ip a couple of weeks ago and updated all our dns records.Currently, our dns provider shows the proper records for our server, and if we dig the server at our dns provider we get the results. However, if we ping the server, or dig it and don't specify our server we get the old ip address.An opendns cache check also sporadically returns the proper results from some of its locations but generally returns the old ip address. Does anyone have any suggestions because this bewildering me.
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Jan 7, 2010
Recently I had (and am still having) a lot of trouble with my Fedora 12 installation.First, 3D acceleration and sound stopped working. This was solver by adding my account to the "video" and "audio" groups (I wonder howcome it worked before?).Then, my keyboard stopped working in X. It would work fine in CLI mode, but as soon as I start X not even the Num Lock LED worked! I think I glimpsed that it might be due to a missing keymap or something, but I don't know. I got my computer back by making Xfce's keyboard settings override X, but it still isn't right, and I can't use anything other than Xfce.Recently I tried to burn a CD/DVD but neither Brasero, K3B, nor cdrecord could detect the DVD burner.
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Jan 3, 2011
If I right-click a file and select VLC, I get immediate playback from VLC. Everything seems fine until I hit Ctrl+O to select another file. It seems to freeze, but it actually just takes a few minutes to get going.So I opened VLC via a terminal, then hit Ctrl+O,
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May 30, 2010
I was working on our PC and screwed up my logical partition. Not much of a concern there but the problem starts when I was trying to repair them. My gparted says that my whole HD is empty. In fact, when I try to install an OS, it wanted to install it on the whole HD (80-G).
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May 26, 2011
So first my network appindicator disappeared, then my weather appindicator won't show me the weather, NOW my computer won't let me download anything from the software center and won't let me update anything in the upgrade manager.
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Jul 14, 2010
I am setting up a server and trying to access its partition over the nfs on a client machine. Our server has 4 1.5TB disks and the idea was to make a RAID 5 out of it.Now here is the problem:When I used only 1 disk that is nfs partition was of 1.5TB, I got fine speed(30MBps), but with multiple disks whether I am making 3TB (Raid 10) or 4.5TB (Raid 5), I get a really poor speed of 5-6MBps. I/O just waits.But for all above cases, disk I/O locally works fine.Does anyone knows any NFS limitation that is causing this problem?
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Dec 20, 2009
Just like the title, my Ubuntu 9.10 audio acts really weird to me. Sometimes I can't record anything using the sound recorder and the immediate muting of the loud speaker when i plugged in my headphone doesn't work, but then all of sudden it worked and then the problem might occur again. It's like, in some period the audio works perfectly well as if there's not bug, and then it goes wrong.What I noticed is that the problem reoccur when I shutdown/restart my PC and after few minutes/hours/days it works fine again. Does anyone know why this happens and help me solve this problem?
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Oct 10, 2010
I have just upgraded from 10.04 (where everything was working fine) to 10.10...I am able to boot in recovery mode (graphic mode is working ok this way), but not in normal mode: just after the purple Maverick boot screen, I get a black screen where my computer stucks, possibly for ever (although I can't be definitive on this point )Do you guys have any thought on what is going on here?I boot once in recovery mode, updated my graphic driver (ati, which was not working well anymre according to catalyst), and then I thought everything would be allright, but it is not the case: still black screen at boot.
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Jan 30, 2011
I recently (fifteen minutes ago) started my old desktop again and tried to do an updateCode:sudo apt-getupdateWhich gives me:Code:E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.When I try this, my screen goes back and after a few seconds I end up back at the loginscreen (I not logged in anymore)The output of Code:sudo dpkg --configure -ais followingCode:Setting up ubudsl (1.0.0.77-7) ... System start/stop links for /etc/init.d/ubudsld already exist.Stopping UbuDSL daemon...No /usr/sbin/ubudsldaemon found running; none killed
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Oct 27, 2010
I've recently switched back to Ubuntu and I eventually had to sync my new ipod. I've been getting this problem where every time I sync with either GTKpod or Rhythmbox my ipod music is acting weird. It shows new music that I've added but when i choose to play it skips to the next track that then skips to the next track, and so forth. Its as if my ipod is filled with songs that don't even last 0.0 seconds! But the songs completely play in Rhythmbox, so I don't think its a problem with the files themselves.
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Sep 29, 2010
I have a DNS server that's been working just fine up until now. I have a local domain, "galapagos.office" set up, with several subdomains on it. I've been able to get to all the subdomains just fine for the last couple weeks from several different machines.Now something weird's happening:
I CAN ping wiki.galapagos.office from a local machine
I CAN do an nslookup on wiki.galapagos.office from a local machine
I CAN see wiki.galapagos.office in a browser from a local machine
I CAN'T ping wiki.galapagos.office from the DNS server itself
I CAN'T do an nslookup on wiki.galapagos.office from the DNS server itself
I CAN'T see wiki.galapagos.office in a browser from the DNS server itself
And I COULD do all these things before. I don't know exactly when things went south because I almost never do anything from the DNS server itself.
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Oct 11, 2010
We are running a sendmail(8.13.8-2.el5) service on one of our server running RHEl5
When I try to mail from one of the machines connected to the server on our private network, log file on that machine shows that the mail has been sent and also there is no mail in the queue, but when I check the server, there is no mail received, not even any status on log file. Did anyone experience anything like this or any idea about this problem?
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Dec 14, 2010
I want to use 2 network cards on a notebook (one internal and one by USB). I don't want the typical "internet sharing", so I want it to act really as a switch:
Other room <== 1Gb/s ==> Notebook <== 100Mb/s ==> network switch with more computers.
I want to do it because i want to use the 1Gb/s link from the other room to the "servers" room, and then the rest of servers will run at 100Mb/s. I wanna all my computers in the same network, like there's no notebook in the middle, so the Notebook will act as a switch (and a server). i wanna (assumming all of this is possible): Code: > [network switch] 1Gb/s
> 192.168.2.1 [router] 100Mb/s
> 192.168.2.2 [wi-fi AP] 100Mb/s
> other room 192.168.2.50 [new notebook] 1Gb/s
[code]....
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Jul 29, 2011
I have a Debian 5 system with two nics. eth0 is set up with dhcp-client which will receive a public ip address from my isp. The eth1 will be for my local network and I want to use dhcp-server daemon to serve addresses to my internal network. The area I am confused about is how transmissions are getting sent between nics. I've been told to enable tcp forwarding but I don't understand how that would work since the nics have different network addresses... unless tcp forwarding is basically nat or something..
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Feb 11, 2011
So I just turned my computer on and it was beeping rapidly, and it would stop if I hit "Enter". Also this came on my screen: Cannot set Fray", something like that. It boots fine..just what is that?
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Jun 10, 2010
so i had Jaunty installed last week with no problem. But then i decided to install winxp, erasing it. I hated it, and reinstalled ubuntu, this time lucid.However, the internet has stopped working properly. I've tried wireless and wired connections and they either dont work or will load half a web page after a few minutes. A good deal of the time the browser will time out or fail to find server.The ethernet is working, so I'm assuming the issue is with a missing driver or the such. I have 10.04 32bit installed on Gateway MD2614u laptop.
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Jul 23, 2010
I am currently facing a weird problem, It's that the internet connection becomes extremely slow when using static IP instead of DHCP when Im connected through a cable! The local network seems okay with both, but differs when using the internet!
I've ran a ping test and got the following results!
using static IP
Code:
$ ping -c 3 google.com
PING google.com (209.85.153.104) 56(84) bytes of data.
64 bytes from 209.85.153.104: icmp_seq=1 ttl=42 time=343 ms
[Code].....
When I used static IP i received only one packet while when using DHCP i received all three!! Also I lost 66% of the packets when using the Static IP connection! And most importantly, the speed, DHCP connection was 8 times faster than Static IP connection!
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Mar 10, 2011
I have an old HP pavilion laptop (2005) that was useless.I installed Ubuntu 10.10 on it and it became a working computer again. It was excellent, snappy, it was as if I had bought a lower end modern laptop.Internet was working great.I did not have any complaints (in fact, I thought that a modern computer running Ubuntu would beat my so adored macbook, speed wise). For some time I had 2 efficient computer, a macbook and the hp with the Ubuntu OS. So on the last weekend of February, my internet got extremely slow on both computers. After that annoying weekend (February 28) the internet on my mac was good again,however, the internet on my linux continued to be messed up.I tried disabling IPv6 on my machine and on firefox, tried the openDNS, the MTU stuff, but nothing.I even formatted my disk and installed ubuntu again (all this using the installation CD).However, apparently the installation CD uses some of your existing configurations (for example, the layout of the close, minimize,maximize:menu buttons on the corner of windows did not go back to default). So I'm guessing whatever was messed up with the computer didn't change back to default or the previous configuration when I first installed ubuntu. To give you an idea of how slow the internet is, installing alien (terminal installation),I got low speeds of around 150B/s (no typo here, it was bites, not kilo bites) and the fastest around 5,000B/s. The fastest I got was downloading chrome at 6kB/s but that didn't last even a minute. So given that these transfer rates are obtained both on firefox and the terminal, I'm assuming it is not a browsing problem.
A thick headed solution, would probably be to install windows again to get the network configuration to "standard" and then install Ubuntu formatting the disk again (using the CD).I'm using ethernet,so,thinking it might be cable problems, I did try to use the cable that was on my mac on the machine with linux. No success there.
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May 29, 2011
I don't know if others are experiencing this but browsing is extremely slow in firefox after "upgrading" to ubuntu 11.04. I have not tried other browsers. Even checking for updates fails several times.
I had to re-boot to windows to post this thread and now it's working fine. It's been 3 days since upgrading and I've observed many times that there's no such problem in windows while I have to wait like 4-5 minutes and refresh many times to open a single page. Some sites like google are quicker though. I use firefox 4.0 both in ubuntu and windows. I didn't have this problem in 10.10 and it took me about 5 hrs. to download 1 GB upgrade packages.
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Nov 16, 2010
Trying to watch movies between my systems and I'm getting upload speeds of 6.5 kb/s from my system to the one connected to the tv. I'm running Ubuntu on both machines, tried with VLC and XBMC. Both are running wirelessly but I know that this issue is new, I used to get at least a meg a second on LAN.
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Jul 26, 2011
I've had so many issues with 11.04 Natty that could not be solved I just fresh installed Ubuntu 10.04 from a USB as my netbook does not have a CD drive. Well, after installing and restarting I have no wireless. I ran iwconfig and I got pan0 no wireless extensions. How do I fix this?lspci says
ken@ken-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics
[code]...
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Jul 9, 2011
the title says I have painfully slow(connection times out when loading google) ethernet connection on my new pc. This comp had similar problems with the OEM windows 7 install but now it's strictly a linux box so I'm anxious to get it fixed.
I'm running Ubuntu 10.04 and Slackware 13.37, and have wireless working on Ubuntu but haven't set it up on Slack yet. The only thing I've done so far is try to change speed and duplex using ethtool but it didn't work, the settings stayed the same. I'm writing from another comp so I'll do my best to post any info you request but I'll have to use a flash drive lol
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Dec 10, 2010
I've been troubleshooting this problem for several hours now and I'm out of ideas. My internet connection is fine in Windows 7 but an older computer I resurrected (AMD Athlon 1.7 GHz, 512 MB RAM, Fedora 14 Security Lab Spin) is having the stop-and-go's with its internet connection. It will work for very briefly, then it gets extremely slow, where any page I try to navigate to in Firefox 3.6 takes forever to load.I have a DSL connection and my DSL modem is connected to a Linksys WRT54G2 router. I set up a static IP in Windows but don't know how to do this yet in Fedora 14, and I need to get my internet connection working so I can troubleshoot further, but with it being so slow, I'm having to use Windows to search for problems and then switch over to the Fedora box via KVM (IOGEAR), which I also just started using. I don't think that would be related, but who knows.
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Mar 2, 2010
I just got my internet working through the wireless card with some help. However, my downloading speeds are beyond extremely slow. While I type on this computer, I am downloading things @ ~500-700kb/s, but when I try to download the package updates etc for my Ubuntu 9.10 laptop, It downloads @ ~ 4k b/s- which is UNBEARABLY slow, putting me at 14h left to complete a 200 mb update. Dell Inspiron 1100. Ubuntu 9.10
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Mar 19, 2011
I just did a fresh install of 10.04 on my system and everything runs perfect and exremely smooth, however the update manager and firefox are taking forever to load (the progress meter reads something like 2d 17hr 23m), however the internet connection is very fast.the logs are all insanely clean with the fewest errors I've ever seen, so this shouldn't be too terribly difficult to solve. Also I seem to be having a problem with the font on Firefox, every fourth letter or so has a bright streak in it. Anyway, that might be related or not but my main concern right now is getting my download speed up to par?
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Apr 18, 2010
I have just recently installed Ubuntu karmic on one of my machines. The network worked perfectly until today, when it just wont connect. I have double checked that the SSID and Password are correct. It is a WPA network. I am sure it is a problem with my computer, not the network, because my brother's laptop (which I am using right now) has ubuntu 9.10 installed on it and the network is working perfectly.
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Jun 4, 2010
i am getting weird results after mounting the /home directory from the server. seems like the client sees the ldapuser and it's directory from the server side.. /home/ldapuser. but it's pulling the "blank" user as it's permission. blank is the actual user on the client side. any ideas why?
server side:
[root@localhost ~]# showmount -e
Export list for localhost.localdomain:
[code]...
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Sep 3, 2010
I can't ping by netbios name or fully qualified domain name, BUT nmblookup works just fine. I know it's a dns problem(s) I just don't know what or how to fix it. I'm very new to all of this(networking, domain administration, posting on forums etc) so I hope this is the right way to ask for help here. I've searched around the forums and the internet for a bit but I haven't found a solution to my problem yet.
here is some background on how the network is setup2 different domains sharing the same dhcp scope.
DC for DomainA is running windows 2003 std
DC for DomainB is running windows 2008 sbs
DC-A has ip of 192.168.1.249
DC-B has ip of 192.168.1.3
router is sonicwall (192.168.1.1)
DC-A is hosting both DHCP and DNS
there are 25 computers in DomainB and 1 computer (not in domain) with ubuntu 10.04 and Free Open Ghost running on it (dhcp off) all 25 computers can ping the fog server by name (and eachother) all 25 computers pxeboot to fog just fine
[Code]...
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Mar 8, 2010
I have a CentOS 5.3 box running Samba and OpenVPN. I have the Samba server setup as a WINS server and OpenVPN pushes the WINS server to clients when they connect. Everything is working great except for one problem. When I connect to the VPN using a Windows machine at a remote location, I can ping all the host names of computers on the VPN network no problem at all. However, when I ping the host name of the OpenVPN server it resolves to 192.168.122.1. All my machines are on a 10.x subnet and I have no idea where this ip is coming from. I've checked the hosts file, lmhosts, etc. and can find no reference to this 192.168.122 subnet.
I think I recall seeing this 192.168.122.1 ip when I had installed the Virtualization group and it created a virtbr0 network bridge with that ip. I've since removed the Virtualization software and deleted that bridge.
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Nov 20, 2010
I have several Ubuntu installs, including one on a flash drive. I also have a server. I want to sync my home directories from all my client installs onto my server. What I want is really a combination of two things: Unison, which enables me to work without a network connection. An SFTP filesystem so that changes are immediatly sent to the server, not JUST at login and logout, which makes login and logout extremely slow. Is there any combination I could use? Could I make unison sync extremely frequently?
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