Networking :: 5 Sec DNS Resolving Time ?
Dec 13, 2010
I have debian lenny amd64 with two network cards. I have had one and when problem started to occur I tried installing second, but problem still appear.
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I have tried dnsmasq to solve problem but I failed, and that is reason why 127.0.0.1 is there.
With first dns:
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Same is first time with dnsmasq, but then it gets cached.
My local network works perfectly, and I am writing this with remote desktop from some other computer.
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May 29, 2011
I have just installed Fedora 15 and while I can ping websites from the CLI I cannot access sites via my browser, I have installed it on my laptop and it is not presently connected to a network, just a single device connecting wirelessly via a home broadband line to the internet,
What entries should be made in my hosts.conf file, I have entered
Do I need to make entries in the nsswitch.conf file, At the moment it reads,
I have also checked the permissions on these 3 files and all users and groups have read permissions.
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Feb 12, 2010
EDIT: The problem is more basic than dnsmasq. On testing to see if the nameservers are reachableCode:root@ps1:~# ping 218.248.255.146connect: Network is unreachablePost title pre-pended with [DO NOT REPLY] dnsmasq on a recent Slackware 13.0 install is not resolving. Usually dnsmasq "just works". I have tried all the problem analysis techniques I know and am stumped.
First the symptoms:
Code:
root@ps1:~# vi /etc/dnsmasq.conf
[code]...
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Jun 8, 2011
I have this in my resolv.conf file:
Code:
I have also used external DNS servers just to eliminate there being a problem with 192.168.1.67 (which many other computers are using successfully).
When I attempt to ping Google just to see if it works I receive this:
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If I issue a host command against google.com I receive this:
Code:
I had thought that host and the name lookup routine would use the same DNS server and it should fail on the host command as well as the ping, but evidently not.
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Jul 14, 2010
My ip address is not resolving to the domain name.
I have checked etc/host reboot and all but it's not working.
I can't seem to find where to post my issue then I found you and you are on line
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Apr 30, 2010
I have a strange problem with wireless internet connection. We have 3 computers, 2 of them with Win 7 and 1 with Ubuntu 9.10 + Win XP.
Now if all three computers are connected to the internet through wireless router, the computer with Ubuntu 9.10 frequently fails to resolves hosts using various web browsers. I have to disconnect and reconnect to the router to get internet back but it only works for a maximum of 1 minute before it fails again. If the 2 computers with Win 7 logs out from wireless connection then the Ubuntu 9.10 machine works just fine for long periods.
If i boot with Win XP internet works perfect even when the other computers are connected but i really want to use Ubuntu 9.10. The wireless chip is an Atheros 9285.
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Jun 6, 2011
I'm on 11.04 on VMware 4.1, trying to get name resolution working. I can ping by IP other systems including on the internet. The network manager Icon on top shows a wireless icon, but the 'Wired Network' is grayed out and below that says 'device not managed'. What can I do to fix this? The interfaces file has the auto lo, then below that
iface eth0 inet static
stuff...
It doesn't work with or without the auto eth0 entries.
I have the nic set to DHCP and on my dhcp server gave it the mac address of the box to assign it an address, that is working.
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Jul 27, 2010
At work we run DHCP. hostnames have the format: computername.city.mycompany.com
I have a laptop runing Fedora 13 and a desktop I use for backups, etc. My laptop is named copernicus. Desktop is named galileo. If ping either hostname from itself I get back the localhost IP address. If I ping the fully resolved hostname it tells me unknown host. The desktop is exporting an NFS share I use for backing up work data. I need the laptop to be able to resolve host names to mount the share since we use DHCP. The desktop is dual boot and if it is booted into windows my laptop can resolve the hostname properly. What do I need to do in Fedora to get it to register a hostname with the DNS and/or DHCP server? Should the domain and the search path below both say the same thing?
Here is resolv.conf on the laptop (I am at home). The desktop looks the same, except for a different nameserver. Both computers can resolve other hostnames, just not each other.
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Mar 16, 2010
I have a ubuntu server running which acts as a firewall/dhcp router for sharing internet to all computers on the network. On the network i have my stationary computer (win7) and my laptop (macbook).The server has 3 nics installed.ETH2 for internet. ETH1 (192.168.1.2) for windows pc. ETH0 for macbook (192.168.2.2).I can share files no problems over the network. Between windows <-> server, macbook <-> server, windows <-> macbook.The problem i'm experiencing is that i can't seem to find either hostnames between windows and macbook. They connect to each other fine with the right ip addresses, but they can't seem to connect when using computer names.
On both the macbook and windows pc i can see the server and connect to it without using the ip adress.What can i do to make them see each other with their computer names? Is there anything i can install on the server and configure in order for it to work automatically?In osx you have a tab in the finder that says "shared" which shows the computers on the network and only my server pops up.The same in windows, i can only see the server but not the macbook.As said, it works perfectly fine if i use \192.168.2.2 (or smb://192.168.1.2 on the macbook) but i'd rather be able to connect via the computer names.Would also love if they could resolve automatically so when a friend connects to the network i'll see his computer name right from the start, without any re-configuration.
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Feb 6, 2011
I just set up my first ever bind9 DNS server running on ubuntu server 10.04. This server is also my gateway/dhcp server.
Here is what is weird: If I do a dig @8.8.8.8 dschuett-lmtl.scs.local from any of my clients it resolves?!?! Dig shows that it got the answer from MY Bind9 DNS server (and NOT Google's of course), but why is it still resolving when I'm telling it to use and external DNS server?
The other weird thing is that the SAME EXACT dig command above does NOT resolve internal host names if I do it from the Bind9 DNS server. - Which is what i would expect SHOULD be happening if done from the client machines...
Here are the dig results:
From any internal client:
Code:
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Jun 15, 2010
I had configured Squid in RHEL 5 and facing an issue with pinging. Not able to ping any website,hostname is resolving to ip address but not able to ping
[code]...
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Jan 25, 2010
In my network my proxy / firewall (iptables + squid) works as dns forwarder. I needed to configure an url at my /etc/hosts in my linux boxes which are behind the firewall into the lan. I want my machine to look at its local /etc/hosts file before querying the dns to the firewall.
Despite I configured my /etc/host.conf this way:
My machine keeps resolving the name through the dns forwarder (firewall) and not from the /etc/hosts file first.
Is there any action needed after configuring /etc/host.conf? Any service to restart?
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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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Jan 15, 2011
I have a Windows 7 professional x64 pc that intermittently fails to resolve host aliases. The nameserver is a Fedora 11 system running bind 9.6.2-p2. Its cannonical name is trixter.intranet.org, and it serves several web sites, each with a different host alias: hg.intranet.org, svn.intranet.org, bugzilla.intranet.org, etc.
Occasionally, the Windows pc will be unable to find any of the aliased hosts, even when it can find the canonical name. The aliases will be un-resolvable for a period of several minutes, and then, with no intervention, they can be found again. Trixter can always resolve the aliases to itself.
Even stranger, when I use Cygwin from the problematic Windows 7 PC, it CAN resolve the hosts. I can ping hg.intranet.org from a Cygwin shell, but not from a cmd.exe window. Administrator privileges make no difference.
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Oct 16, 2010
So I've been reading around a bit, and have found a few fixes for this Resolving Hosts problem, but none of them have fixed mine yet. Basically what happens is all browsers fail to load pages, pinging local network works, but pinging default gateway doesn't. Cannot ping external websites and cannot reach update or upgrade servers for ubuntu. All networking works as normal on all other PCs in house, as well as the windows 7 boot I have on my ubuntu PC.
What I've tried:Disabled IPv6 completely by preventing the module from booting up Manually setting network settings instead of using the router's DHCP server Changing DNS servers from ISP to Google public DNS to OpenDNS Buying a new ethernet card And a few other things I can't remember off the top of my head, none of which worked. From memory, all this just started happening out of the blue. I recently changed from Windows to Ubuntu, and was enjoying the switch but all of a sudden I couldn't get on the internet on Ubuntu.
Now, I'm not sure why, but I decided to ping myself. Not my LAN ip, but our router's WAN ip. It worked, albeit took a little while to return a response the first packet, but each subsequent packet after that was a normal speed (~0.5ms). The strange thing about this was that I found that for a few seconds after pinging myself, I could access the internet. After a few seconds though, it returns to it's resolving hosts self again, which another self-ping would fix.
Consequently, in order to browse, I have an open terminal constantly pinging myself which appears to be working. Not ideal, and certainly not something I would like to keep doing for long, but it works for now. I really like Ubuntu, but if I can't get this net thing fixed, I can't finish moving over from Windows!
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Aug 9, 2009
After installing FC11 on my Mac Mini intel terminals, I noticed the network config GUI is completely broke, So I continued with a hand configuration.
Everything seems ok eth0 is up , it has the correct IP, DNS and default gateway, but browser quieries take forever to load.
E.g. if I type Google in the browser it takes about 20seconds before it loads the page.
To add insult to injury, I have a 16Mbit/s Down 2.5Mbit/s uplink. the other 10 or so rackservers on the network responds fast, so it is nothing to do with the network or connection. They all run FC7-9.
The problem is squarely with FC11 and must be some bug not reading or resolving DNS correctly.
Anyone have an idea how I can figure this out with FC-11.
It seems to be the worst FC distro.
I generally was happy with all FC6-9, but 11 really sucks (the ppc version wont even install on my ppc terminals)
That the Mighty Mouse Wireless, worlks out of the box is very nice though, but that is all.
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Oct 20, 2010
In the right upper corner of your screen,you can see if you have a network connection or not.Most of the time I do not have one according to Networkmanager (?).So I have to enable my wired connection manually.I already tried a lot to change my settings so I would have a network connection at boot,but it doesn't seem to work....Firefox is in Offline modus when I logon..
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Jul 23, 2010
I use Debian Lenny .I installed NTP server on my debian and take following changes to /etc/ntp.confserver 127.127.1.0fudge 127.127.1.0 stratum 10but when I try to sync time from clients I cant and I see following error message :no suitable server found for synchronization
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Nov 18, 2010
I installed RHEL 5 on my desktop a few days back. I want to enjoy movies in my new OS. Some one told me to install mplyer caz it plays any file. So I decided to install it. I issued the following command:
[Code]...
As you can see yum is not resolving the dependencies.
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Nov 29, 2010
I am installing rpm using the switch "--aid". But it is not resolving dependencies! I am using RHEL 5.
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Jan 21, 2010
After adding a new name to bind, and it just can't resolve it.
Trying to restart, this happens:
And the server it self still cannot resolve it.
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Jul 11, 2010
I'm having trouble getting my debian box to find my windows box. This should be possible using netbios names.
The debian box is a newly installed minimal (nothing but base) release, to which I've added samba (using apt-get).
The windows box can see the debuan box just fine. Attempting to ping it by name results with:
Pinging debbox [192.168.1.100] with 32 bytes of data: ...
But going back the other way, the debian box can't see the windows box.
ping: unknown host winbox
I'm pretty happy that the windows box is behaving itself as there are no problems getting it to interact with other windows machines on the network.
Looking on google, the suggestion is to modify the host line in /etc/nsswitch.conf to include wins: hosts: files dns [b]wins[/b]
This worked on other linux machines in the past but not this time.
So my guess it that I've got SAMBA mis-configured or I'm missing a package.
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Nov 19, 2010
I am having DM6446 board. I am trying to connect internet via this board. In this I am having some issues regarding this. Normally in terminal when I ping to particular site, I will use the following command
>> ping google.com
I will get proper response with the packets details. When I am trying the same thing in minicom terminal I am not getting anything even the proper error messages. If I use the same ping command in different way
>> ping 209.85.231.10(ip of google.com)
I am getting proper response. I don't know why the DNS name is not resolving in the board. Is there any documentation is available to do the internet connectivity with this board?
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Jan 25, 2011
I am using Fedora 7 in my server. Currently windows server 2003 (Active Directory integrated with DNS) is running. I want to switch my DNS to Linux. In my small organization there are only 20 users using static IP address and the IP are mostly permanent. so should deploy name server or I just populate eateries in /etc/hosts file ?
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Nov 23, 2010
I installed fedora core 10 on my pc & now i have been trying to install samba. I dont have a network so i mount and use my dvd for installation. I lack exotic package management tools like apt or yum yet the system-config-packages tool does not make sense either. so am stuck with the rpm -ivh [package] command.
The issue however is that this command returns querries about missing dependencies when I attempt to install. So is there a way (switch) i can add to tell the rpm command to automatically check and solve these dependecies using the Packages folder on my mounted dvd? - because i believe all these dependencies are on the dvd.
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Jun 28, 2011
I set a variable before entering the FTP session (vDate). Then it does not seem to resolve when I try to use it in the session as part of an mput command. $vDate resolves as an empty value. Can you point me in the right direction?
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Jan 28, 2010
I have a version of slackware installed as a virtual machine and am not able to ping hosts or otherwise receive data from any IP addresses external to the LAN. I think this problem is due to the hostname of the vm not being recognized by the gateway (ddwrt); the vm receives an IP via dhcp but the gateway does not seem to recognize its hostname (registers as *).
Will readily respond with whatever conf file is needed.
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Apr 26, 2010
The problem of loop detected when resolving the name from dns.Why the problem of loop detected comes when name is resolving from dns.
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Oct 18, 2010
I have some strange problem with dns resolving. I am working on computer and suddenly, out of nowhere dns resolving stops to work on my machine. Sometimes networking restart solves problem, sometimes not. It happens randomly two-three times in a week, and at random time. Network in virtual machine on same computer works perfectly even if dns resolving stops on host.
I have tried everything but I can't find what causes it. How can I troubleshoot to find out what causes problem? Ten minutes ago it happened again and I have solved problem with networking restart.
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Jun 7, 2009
I have installed Bind DNS server in Opensuse 11.1 and it was running fine for two weeks. However starting last week it was unable to resolve a lot of internet sites (e.g. opensuse.org). I can say it is working partiallyI tried restart the named service and it worked fine for only about 15 minutes and back to partial condition.All the records in zone files can be resolved. Only some internet websites not able to resolve. The same sites can be resolve with another dns server internally
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