[SOLVED] ping: unknown host

Ok I feel kinda stupid here. Yesterday I decided to make a clean install on my system. After the installation I tried to upgrade the system but couldn't. The pacman -Syu gets me:
error: failed retrieving file 'core.db' from ftp. .. . .. : No address record
error: failed to update core (No address record)
I guess it has to do with this (http://www.archlinux.org/news/hostname- … inetutils/) but I have no idea on how to fix it. The ping command gets me:
ping: unknown host www.google.com
Any help? Thanks.
If I posted this on the wrong section feel free to change it.
Last edited by Aventinus (2011-10-17 06:07:26)

sensei wrote:
Aventinus wrote:I use wired connection, ethernet. If I login via Ubuntu or Windows (triple boot) everything is fine. I have done this procedure many times. The article doesn't help (or I'm missing something).
I can't understand what's the matter.
How do you configure your network?
Here's an article on how to configure a wired network.
Well, that did the trick. All I had to do is to add "eth0" to the interface section on rc.conf. Although I wonder why all the other times when I did a clean install, this procedure was automatic. Anyway, thank you all for your time. :-)

Similar Messages

PING - Unknown host 127.0.0.1, Unknown host localhost

Hello,
I have a problem - I created a chrooted jail for one user. When I'm logged in as root, everything work fine, but when I'm logged in as a chrooted user - I have many problems:
1. When I execute the command ping, I get weird results:
bash-3.00$ usr/sbin/ping localhost
usr/sbin/ping: unknown host localhost
bash-3.00$ usr/sbin/ping 127.0.0.1
usr/sbin/ping: unknown host 127.0.0.1
bash-3.00$ usr/sbin/ping ip_address1
usr/sbin/ping: unknown host ip_address12. When I execute
bash-3.00$ svcs -x I get:
svcs: Could not bind to repository server: repository server unavailable. Exiting.3. When I try to sftp or ssh another machine
bash-3.00$ sftp ip_address1
bash-3.00$ ssh ip_address1I receive the message:
Host key verification failed.although I am able to ssh/sftp the machine as root
4. When I ftp another machine
bash-3.00$ ftp ip_address1I get
unknown host or invalid literal address5. If I telnet another machine:
bash-3.00$ telnet ip_address1I receive
ip_address1: service name not available for the specified socket typeI need to add that all these commands work perfectly for root. I probably didn't copy some of the necessary configuration files/programs to the chrooted directory. But which ones?
Regards,
Przemek

Przemek198 wrote:
Hello,
I have a problem - I created a chrooted jail for one user. When I'm logged in as root, everything work fine, but when I'm logged in as a chrooted user - I have many problems:When something works as root and not as a regular user, I think "permission problems".
1. When I execute the command ping, I get weird results:
bash-3.00$ usr/sbin/ping localhost
usr/sbin/ping: unknown host localhost
Here it appears that hostname resolution is different. Since that happens in the /etc/inet/hosts file (or possibly the /etc/inet/ipnodes file), I'd examine those and see if they are only readable by root for some reason. (And this would be within the chroot environment, since that's where the problem is).
Darren

Ping: unknown host

I'm running the current version of Arch Linux inside VMware Player 6.0.4 on Windows 7. This installation is on a laptop which I already have successfully connected to WiFi both natively and in other virtual machines. I tried to install sudo, but I received a bunch of error messages about not being able to find the host. I checked this with ping www.example.com and got the same thing. Is there any reason for why Arch Linux is failing to resolve these domain names? How do I fix it? I've looked around the forums already and none of what I read either worked or was relevant to my situation.

fukawi2 wrote:
Post the output of:
ip a s
ip r s
cat /etc/resolv.conf
Command:
ip a s
Output:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65336 qdisc noqeue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno16777736: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff
Keeping that one MAC address private with "XX:XX:XX:XX:XX:XX".
Command:
ip r s
Output:
Nothing
Command:
cat /etc/resolv.conf
Output:
# /etc/resolv.conf
search localdomain
nameserver 198.168.8.2
# End of file
"nameserver 198.168.8.2" is exactly what I have in my Ubuntu VM…I think. Now I'm not so sure. I copied that over from the Ubuntu VM, so maybe I missed a digit.

[SOLVED] Ping Error (Network seems to be connected)

Hello,
Fairly new Arch user here. Had it installed a while back but it seems this time around something isn't configured right.
I'm not sure what information is useful for troubleshooting this, but I have no problem providing whatever may be helpful.
I'm trying to get my wireless connection working.
I am apparently connected to my wireless network, but when I attempt to ping google.ca/com/etc. I get the error
ping: unknown host google.ca
When I try to ping 8.8.8.8 I get the error
connect: Network unreachable
I've read through some wireless wiki page info and I've been searching the forums but to be honest I'm a little bit lost for a starting point because I don't understand what's wrong in the first place (I seem to have a connection but can't connect to anything).
Any and all help is much appreciated.
Thanks!
Last edited by Roby (2014-10-30 19:14:46)

Absolutely
ip link (I left the other connection info out as I had to type this out manually. Please let me know if there was anything other than the wireless part of this output that might be needed)
wlp2s0: <BOARDCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
link/ether 70:f1:a1:a3:2f:9e brd ff:ff:ff:ff:ff:ff
ifconfig
-bash: ifconfig: command not found
Last edited by Roby (2014-10-30 13:39:34)

MQJE010: Unknown host:

Trying to connect to MQQueueConnectionFactory with queueConnectionFactory.createQueueConnection() gives me JMSException with LinkedException:
MQJE010: Unknown host: NT503
MQJE001: Completion Code 2, Reason 2059
com.ibm.mq.MQException: MQJE001: Completion Code 2, Reason 2059
at com.ibm.mq.MQManagedConnectionJ11.<init>(MQManagedConnectionJ11.java:166)
at com.ibm.mq.MQClientManagedConnectionFactoryJ11._createManagedConnecti
on(MQClientManagedConnectionFactoryJ11.java:196)
at com.ibm.mq.MQClientManagedConnectionFactoryJ11.createManagedConnectio
n(MQClientManagedConnectionFactoryJ11.java:213)
at com.ibm.mq.StoredManagedConnection.<init>(StoredManagedConnection.java:80)
at com.ibm.mq.MQSimpleConnectionManager.allocateConnection(MQSimpleConnectionManager.java:150)
at com.ibm.mq.MQQueueManager.obtainBaseMQQueueManager(MQQueueManager.java:649)
at com.ibm.mq.MQQueueManager.construct(MQQueueManager.java:598)
at com.ibm.mq.MQQueueManager.<init>(MQQueueManager.java:419)
at com.ibm.mq.jms.MQConnection.createQM(MQConnection.java:976)
at com.ibm.mq.jms.MQConnection.createQMNonXA(MQConnection.java:707)
at com.ibm.mq.jms.MQQueueConnection.<init>(MQQueueConnection.java:206)
at com.ibm.mq.jms.MQQueueConnection.<init>(MQQueueConnection.java:76)
at com.ibm.mq.jms.MQQueueConnectionFactory.createQueueConnection(MQQueueConnectionFactory.java:143)
at com.hoogehuys.b2b.messaging.JmsQueueReceiver.initialise(JmsQueueReceiver.java:111)
I am using MA88 for the MQ Java Client, a JNDI .bindings file to connect, with settings for the QueueConnectionFactory:
Name: QUEUECONNECTIONFACTORY
Transport: Client
Queue Manager: NT503
Port: 1414
Host Name: NT503
Channel: SYSTEM.DEF.SVRCONN
On the server (NT503) we have MQSeries 5.2.1 on WinNT4. On the server MQ and the QueueManager (NT503) is running, I can connect to the server with ping, netbios, I have enough user rights. Replacing above hostname with IPAddress doesn't help.
Does anyone has more suggestions? What could be the cause of this error? Where should I look to solve this?
I didn't find any information on IBM's website about this problem.
Dirk

It is strange, because it is the typical error when queue manager is not started ... and then ... it could be happen more situation :
1) how have you configure to your queue manager ?
default ?
Take a look to :
http://www-3.ibm.com/software/integration/mqfamily/library/manuals/csqfao/CSQFAO1P.HTM
it is all error codes ...
and 2059 is :
2059 MQRC_Q_MGR_NOT_AVAILABLE X'80B' Queue manager not available for connection.
On an MQCONN call, the queue manager identified by the Name parameter is not available for connection at this time.
* On MVS/ESA, for CICS applications, this reason can occur on any call if the original connect specified a queue manager whose name was recognized, but which is not available.
* On OS/400, this reason can also be returned by the MQOPEN and MQPUT1 calls, when MQHC_DEF_HCONN is specified for the Hconn parameter.
If the connection is from a client application, this reason code can occur if there is an error with the client-connection or the corresponding server-connection channel definitions. This reason code will also occur if the optional MVS/ESA client attachment feature has not been installed.
This reason also occurs if an application attempts to connect to a queue manager within a group (see the Name parameter of MQCONN), when none of the queue managers in the group is available for connection at this time.
Corrective action: Ensure that the queue manager has been started. If the connection is from a client application, check the channel definitions.
a) is it you queue manager running ?
b) are you using a privilige user to run mqm libraries ?
[email protected]

Catalog backup getting Error resolving host - unknown host name in dataset

I have new install of OSB version 10.3.0.1.0 [Admin, Mediaserver, Client] installed on the same OEL server. My Catalog Backup jobs end up with error " unknown host name in dataset" and the job detail shows only "Error resolving host - unknown host name in dataset" while I can ping the admin host with obtool pingh command. The standard auto created Catalog backup dataset looks like this:
Dataset: OSB-CATALOG-DS
# Dataset for backing up the OSB Catalog on this administrative host
include catalog
I am able to create a separate dataset with the hostname defined and able to backup filesystems on the same host, np . Only the catalog backup from system generated dataset and schedule doesn't run. I appreciate any help or tip to make this catalog backup work. Thanks.

This problem is fixed by just restarting observiced on admin server.

Java mail - unknown host

hi
I am quite new to java.. I have written some code that requests user input to create a mail then should be sent.
I am using my companies smtp address to send it through but i keep getting the exception unknown host, however when a colleague tries to run my code on there pc on the same network it works correctly. Really impressed my code works but i want to play with it and add things to it and cannot!
Is there any settings or rights i should have on my pc to enable me to get this code to work. Also does anyone know of any external smtp hosts i can send mails from.
I can ping the smtp from dos and that works but will not recognise in code
thanks
A

import javax.mail.Address;
import javax.mail.Session;
import javax.mail.Authenticator;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.AddressException;
import javax.mail.internet.MimeMessage;
import java.io.*;
import java.util.Properties;
* Created by IntelliJ IDEA.
* User: ai011767
* Date: Apr 8, 2003
* Time: 3:24:57 PM
* To change this template use Options | File Templates.
public class JavaMail {
Address recipientEmail;
String ccAddress;
Address senderAddress;
String subject;
String message;
Properties p;
String host;
//*Address replyTo;
public JavaMail(String propertiesPath) {
try {
FileInputStream fis = new FileInputStream(propertiesPath);
p = new Properties();
p.load(fis);
host = p.getProperty("host");
System.err.println(host);
catch (Exception e) {
System.out.println("file not found");
public void mail(Address recipientAddress, Address senderAddress, Address reply[], String subject, String message) {
p.put("mail.smtp.host", host);
try {
Session s = Session.getInstance(p, null);
MimeMessage mess = new MimeMessage(s);
mess.setText(message);
mess.setSubject(subject);
Address a = new InternetAddress();
mess.addRecipient(MimeMessage.RecipientType.TO,recipientAddress);
mess.setFrom(senderAddress);
mess.setReplyTo(reply);
Transport.send(mess);
catch (Exception e) {
e.printStackTrace(); //To change body of catch statement use Options | File Templates.
public void doWork() {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
try {
System.out.println("Type in recipents e-mail Address");
String strRecipientEmail = in.readLine();
Address recipientAddress = new InternetAddress(strRecipientEmail);
System.out.println("Type in reply address");
String strreplyTo =in.readLine();
Address replyTo = new InternetAddress(strreplyTo);
Address[] reply = new Address[1];
reply[0] = replyTo;
System.out.println("Type in Senders E-mail Address");
String strSenderAddress = in.readLine();
Address senderAddress = new InternetAddress(strSenderAddress);
System.out.println("Type in Subject");
subject = in.readLine();
System.out.println("Type in Message");
message = in.readLine();
this.mail(recipientAddress, senderAddress, reply, subject, message);
catch (Exception e) {
System.out.println("No Line to read");
public static void main(String args[]) {
JavaMail jm = new JavaMail(args[0]);
jm.doWork();

Unable to lookup host 'my-imac.lan' – Unknown host

Printing from old iMac running 10.4.11 to printer attached to new iMac running 10.5.7 was working fine for 9 months and now gives the message 'Unable to lookup host ‘my-imac.lan’ – Unknown host'. There is a wireless connection between the machines. It can see the printer which is in the printer list, I can exchange files between the two machines, but it won't print now.
I have just done an Archive and Restore on the old iMac but this has not changed anything.
Wireless printing from a MacBook running 10.5.7 is unaffected.
Any ideas from anyone?

Thanks for the details. Did some more checking this arvo based on your info and found the following on my Tiger G4.
Queue Name: [email protected]
Host Name: 192.168.44.106
As you can probably tell, the IP address shown is the Mac Pro sharing the USB printer, and is running 10.5.7. No mention of a host name or any reference to the name shown in the Sharing pane.
By contrast, another 10.5 Mac connecting to the Mac Pro shows the Queue name as the printer@machine_name (no mention of .local) and the host name as "localhost".
So we need to work out where your Tiger Mac is getting the 10.5 hostname of "My-iMac.lan" I believe that your local hosts file is the likely candidate. If not, then it could be the router that connects the two Mac's together.
For a Mac to Mac local network, the Bonjour Computer Name is typically used to identify each Mac on the network. However, if there is a domain name server (DNS) on your network, then this can override the Bonjour name (which is set via the Sharing pane).
What you can do is open Terminal and type the following.
cd /etc "then press ENTER".
This will change your current working directory to the etc directory.
nano hosts "then press ENTER".
This will display the contents of the hosts file and I believe that this may have a reference to the .lan name that is causing the symptom.
If there is no reference to the .lan name then you can exit the nano editor by pressing Control X.
The next thing to try is pinging the name "My-iMac.lan". Open the Network Utility, located in Applications > Utilities, and select the Ping tab. In the address field enter "my-imac.lan" (without the "s) and set the ping count to 4. Now press Ping and see if you get a reply. If there is something associating this name to an IP address, then you should see the IP address in the top line, and if the IP address is currently in use, then you will see replies from that device.
Let me know how all that goes.
PaHu

Unknown Host

Hello everyone. I have a Mac Mini Server 10.6.1
IP - 192.168.1.14
Name - server.mini
I enabled the web service.
Click +
Host Name - ftp.server.mini
Web Folder - My Web Folder
Save.
From the terminal:
iMac-24-Matthew: Matthew ~ $ ping ftp.server.mini
ping: can not resolve ftp.server.mini: Unknown host
iMac-24-Matthew: Matthew ~ $ ping server.mini
PING server.mini (192.168.1.14): 56 data bytes
64 bytes from 192.168.1.14: icmp_seq = 0 ttl = 64 time = 1330 ms
64 bytes from 192.168.1.14: icmp_seq = 1 ttl = 64 time = 0800 ms
64 bytes from 192.168.1.14: icmp_seq = 2 ttl = 64 time = 1350 ms
ftp.server.mini because it does not work?
google translator

Antonio Rocco wrote:
Hi
Have you added ftp as a CNAME (Alias) entry to your zone?
How it works?
Antonio Rocco wrote:
Are you trying to resolve DNS from the Server itself or from a client computer?
Tony
I try it on both server and client but does not work...
Can you help me ?

ASA 5505: unable to ping external hosts

Hi,
I have a LAN behind ASA 5505, interface NAT/PAT is configured.
External interface is configured for PPPoE.
Everything works fine except I cannot ping from a LAN PC external hosts. I can however ping external hosts from ASA itself. ICMP is allowed:
icmp permit any inside
icmp permit any outside
access-list outside_access_in extended permit icmp any any
Protocol inspections and fixups are default.
When I ping an external host 61.95.50.185 from the LAN host 10.2.32.68 I am getting the following in the log:
302020 61.95.50.185 10.2.32.68 Built ICMP connection for faddr 61.95.50.185/0 gaddr 202.xx.yy.zz/1 laddr 10.2.32.68/512
302020 61.95.50.185 202.xx.yy.zz Built ICMP connection for faddr 61.95.50.185/0 gaddr 202.xx.yy.zz/1 laddr 202.xx.yy.zz/1
313004 Denied ICMP type=0, from laddr 61.95.50.185 on interface outside to 202.xx.yy.zz: no matching session
313001 61.95.50.185 Denied ICMP type=0, code=0 from 61.95.50.185 on interface outside
302021 61.95.50.185 202.xx.yy.zz Teardown ICMP connection for faddr 61.95.50.185/0 gaddr 202.xx.yy.zz/1 laddr 202.xx.yy.zz/1
302021 61.95.50.185 10.2.32.68 Teardown ICMP connection for faddr 61.95.50.185/0 gaddr 202.xx.yy.zz/1 laddr 10.2.32.68/512
Where 202.xx.yy.zz is IP of external interface of ASA.
This is a very simple setup that runs on a number of othe PIXes/ASAs and pings to external IP normally work just fine. I can't understand why ping replies are getting dropped on the interface?
Any help will be highly appreciated.
Thank you.
Alex

Alex / Kerry, you have couple of options for handling icmp outbound, either acl or icmp inspection :
access-list outside_access_in extended permit icmp any any echo-reply
access-list outside_access_in extended permit icmp any any source-quench
access-list outside_access_in extended permit icmp any any unreachable
access-list outside_access_in extended permit icmp any any time-exceeded
access-group outside_access_in in interface outside
or icmp inspection instead of acl.
policy-map global_policy
class inspection_default
inspect icmp
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a0080094e8a.shtml
HTH
Jorge

When I respond to certain messages, I get an error message "unknown host" or "unknown user." Why is this?

Since the latest upgrade to 31.0, there are times when I will receive an e-mail, but when I send a reply, I get a response saying the message is undeliverable because of an unknown user, or an unknown host. These are messages, I'm replying to and have already received, so it's not a case of typing in an incorrect address.
This happens using both my computer and phone. Not sure why this is suddenly happening now, and why only with certain addresses. Any suggestions? Thanks.

my guess is they have invalid replyto information in the header. As it is on two devices, one of which can not run Thunderbird it is certainly not a Thunderbird issue.

No ping between host in the same subnet

Hello,
I have a question about the ASA and the ARP traffic in IOS 9.1.2 for ASA 5585-X and multicontext. I have discovered a curious behaviour about the traffic ARP in the my CLUSTER of ASA's. When I try to send a ping between host in the same subnet and these host have as Gateway the interface of the ASA (ASA is his router) don't works, if I mark the check to enable the comunications between host connected to the same interface this cotinues without work. The only way to get my aim (ping between host), I need to implement and Access Rule allowing the traffic IP between my origin network and destination the same network.
I think that this is some feature of ASA that filter the ARP Request but I don't understand!!! Can I help me, please?
Thanks.

Hi,
Your firewall should not see any traffic between the hosts on the same subnet.
If it is seeing traffic between the hosts then its likely that Proxy ARP on the ASA is the problem. Proxy ARP is enabled on the ASA by default on all interfaces. This essentially means that when the host connecting to the other host on the same subnet sends an ARP request the ASA might reply to that ARP request instead of the actual destination host. This is why traffic might get forwarded to the ASA instead of the actual host.
If you want to disable the Proxy ARP on some ASA interface then you can use
sysopt norpoxyarp
Where you replace the with the actual name you have given to the interface on the ASA. This disables the Proxy ARP
- Jouni

Unknown Host Unable to locate the server requested --- the server does not have a DNS entry. Perhaps there is a misspelling in the server name, or the server no

Hello,
Today i tried accessing transitbux.com with mozilla, but i'm getting this kind of a error as mentioned below:
Unknown Host
Description: Unable to locate the server requested --- the server does not have a DNS entry. Perhaps there is a misspelling in the server name, or the server no longer exists. Double-check the name and try again.
Can anyone help me please, and the same website is accessible with my phone.
Help me please. :(
Regards
-

Try http://www.transitbux.com/
Clear the cache and remove cookies only from websites that cause problems.
"Clear the Cache":
*Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
*Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

5.1.2 unknown host or domain

Hi Team,
On & off i am having intermittent with this "5.1.2 unknown host or domain"
nslookup from server to dedicated domain is good.
Any idea ?
Cheer
Sam

Hi Shane,
The email was sent to a group of user.
THe email sent to gmail was ok but most of the hotmail , & yahoo email having this error
26-Oct-2009 16:47:31.15 tcp_auth                  JEAS 0 [email protected] rfc822; '[email protected]'   welcomePC ([unknown] [172.16.1.5]) 550 5.1.2 unknown host or domain: '[email protected]'
26-Oct-2009 16:47:31.15 tcp_auth                  JEAS 0 [email protected] rfc822; '[email protected]'   welcomePC ([unknown] [172.16.1.5]) 550 5.1.2 unknown host or domain: '[email protected]'
26-Oct-2009 16:47:31.15 tcp_auth                  JEAS 0 [email protected] rfc822; '[email protected]'   welcomePC ([unknown] [172.16.1.5]) 550 5.1 .2 unknown host or domain: '[email protected]'
26-Oct-2009 16:47:31.15 tcp_auth                  JEAS 0 [email protected] rfc822; '[email protected]'   welcomePC ([unknown] [172.16.1.5]) 550 5.1.2 unknown host or domain: '[email protected]'
26-Oct-2009 16:47:35.53 tcp_auth     tcp_local    EEAS 63 [email protected] rfc822;[email protected] [email protected] /opt/sun/comms/messaging64/data/queue/tcp_local/015/ZZg0I2j1wj90I.00 <00a601ca5618$f6dd1bd0$e4975370$@[email protected]> welcomePC ([unknown] [172.16.1.5])Cheer
Sam

Konqueror, other browsers: "unknown host", WTF?!

Every once in a while, Konqueror gives me the following error page after trying to load a website:
An error occured while loading [page of website]:
Unknown host [website].
Trying again will *always* result in the page loading properly - this stuff happens when my internet connection is solid.
Dillo gives me exactly the same problem. Interestingly, Firefox and Links/eLinks don't. It seems almost as though the problem's rate of occurrence is related to the rendering speed of the browser, though I doubt that's the case.
More interestingly, Firefox and Internet Explorer are both affected this way on another computer in my house. Other machines are asymptomatic.
This problem appeared following the installation of a new router, a Dynex DX-E401, after the old one was fried by a power surge.
Changing the MTU used by the router has not helped.
What is going on?

I'm not qualified to say anything good, bad or indifferent about anything related to kde, but in general, disabling IPv6 unless you actually need it is a good thing, IME. I always exclude it from my hand-rolled kernels - that way I don't need to worry about any related config in userspace.
By comparison, I've recently put OpenBSD onto a freed-up partition on this machine, and as I don't know enough about it yet, I'm using their stock kernel. The logs have frequent entries about IPv6 connection attempts failing - not surprising, since my lan knows nothing about it.

[SOLVED] ping: unknown host

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