Centos Bind Error Network Unreachable Resolving
Contents |
Start here for a quick overview of the site Help Center Detailed answers to any questions you might named error network unreachable resolving have Meta Discuss the workings and policies of this site About error network unreachable resolving dnskey in Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads
Lame Servers Error Network Unreachable Resolving
with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it
Named Network Unreachable Resolving Ipv6
only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top (network unreachable) error in my server logs up vote 2 down vote favorite 2 I'm getting lots of network unreachable lines in my Centos' messages log file. They error (network unreachable) resolving ubuntu seem they can't resolve to certain addresses which I do not have any ideas why my server has to resolve to them in the first place. Could anyone let me know the origin of such error? Am I under an attack? Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving './DNSKEY/IN': 2001:503:ba3e::2:30#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving './NS/IN': 2001:503:ba3e::2:30#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'dlv.isc.org/DNSKEY/IN': 2001:500:48::1#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'dlv.isc.org/DNSKEY/IN': 2001:4f8:0:2::19#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/A/IN': 2001:500:2f::f#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/AAAA/IN': 2001:500:2f::f#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/A/IN': 2001:500:1::803f:235#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/AAAA/IN': 2001:500:1::803f:235#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/A/IN': 2001:503:c27::2:30#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/AAAA/IN': 2001:503:c27::2:30#53 Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns.isc.afilias-nst.info/A/IN': 2001:500:1a::1#53 Oct 23 11:39:03 server named[1585
file (messages are slightly obfuscated to protect innocent :)): Jun 29 14:32:11 someserver named[1459]: error (network unreachable) resolving 'www.eolprocess.com/A/IN': 2001:503:a83e::2:30#53 Jun
Ubuntu Bind Disable Ipv6
29 14:32:11 someserver named[1459]: error (network unreachable) resolving 'www.eolprocess.com/A/IN': 2001:503:231d::2:30#53 What bind options="-4" these messages say is that network that contains address 2001:503:231d::2:30 is unreachable. So, what's happening? The problem error (network unreachable) resolving debian is that all modern operating systems support IPv6 out of the box. The same is for growing number of software packages, among them is BIND too. So, operating http://serverfault.com/questions/639061/network-unreachable-error-in-my-server-logs system configures IPv6 address on interface and application thinks that IPv6 works and configures it. But, IPv6 doesn't work outside of the local network (there is no IPv6 capable router) so, IPv6 addresses, unless in local networks, are unreachable. So, you might ask now: but everything otherwise works, why is this case special! Well, the problem is http://sgros.blogspot.com/2012/06/bind-and-network-unreachable-messages.html that some DNS servers, anywhere in hierarchy, support IPv6, but not all. And when our resolver gets IPv6 address in response, it defaults to it and ignores IPv4. It obviously can not reach it so it logs a message and then tries IPv4. Once again, note that this IPv6 address can pop up anywhere in hierarchy, it isn't necessary to be on the last DNS server. In this concrete case name server for eolprocess.com doesn't support IPv6, but some name server for the top level com domain do support it! To prevent those messages from appearing add option -4 to bind during startup. On CentOS (Fedora/RHEL) add or modify the line OPTIONS in /etc/sysconfig/named so that it includes option -4, i.e. OPTIONS="-4" Posted by Stjepan Groš (sgros) at 14:49 Labels: bind, centos, dns, english, fedora, ipv4, ipv6, linux, named, netadm, network unreachable, problem, resolver, sysadm Location: Zagreb, Croatia 5 comments: joebuff said... /etc/sysconfing/named should be/etc/sysconfig/named January 8, 2014 at 2:15 PM Stjepan Groš (sgros) said... Fixed. Thanks. Jan
(network unreachable) – Centos 7 An article by https://www.croc-informatique.fr/2015/09/bind-9-error-network-unreachable-centos-7/ Olivier Legras Pas de Commentaire Après avoir installé Bind sur un centos 7, j’ai eu ces erreurs : Sep http://thelinuxfaq.com/69-named-error-network-unreachable-resolving-centos 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:f::1#53 Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: network unreachable 2001:500:48::1#53 Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:b::1#53 Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:40::1#53 Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:e::1#53 Sep 10 09:28:10 lnx261403P named[21321]: error network unreachable resolving (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:4f8:0:2::19#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:60::30#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns.isc.afilias-nst.info/A/IN’: 2001:500:2d::d#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns.isc.afilias-nst.info/AAAA/IN’: 2001:500:2d::d#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns.isc.afilias-nst.info/A/IN’: 2001:500:1a::1#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns.isc.afilias-nst.info/A/IN’: 2001:500:19::1#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns.isc.afilias-nst.info/AAAA/IN’: 2001:500:19::1#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns1.isc.ultradns.net/A/IN’: 2001:500:2f::f#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns1.isc.ultradns.net/AAAA/IN’: 2001:500:2f::f#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns2.isc.ultradns.net/A/IN’: 2001:500:2f::f#53 Sep 10 09:28:10 lnx261403P named[21321]: error (network unreachable) resolving ‘ns2.isc.ultradns.net/A/IN’: 2610:a1:1014::e8#53 Sep 10 09:28:10 lnx261403P na
host3 named[939]: error (network unreachable) resolving 'ns3.domain.com/AAAA/IN': 192.228.79.201#53 Jun 23 12:06:46 host3 named[939]: error (network unreachable) resolving 'ns2.domainname.com.cn/A/IN': 203.119.27.1#53 Jun 23 12:06:46 host3 named[939]: error (network unreachable) resolving 'serverhost.NET/AAAA/IN': 2001:dc3::35#53 by default, named try to listen IPv6 even if there is no IPv6 configured on the host. So you need to add a line end of named file /etc/sysconfig/named vim /etc/sysconfig/named OPTIONS="-4" Save and exit from the file: :wq! Finally, restart named services. # /etc/init.d/named restart Stopping named: ... [ OK ] Starting named: [ OK ] Comments (0) Leave a Comment Name: Reply to: Email: * Message: * Posting your comment... Search Popular Recent Error : Connection Refused By Host in NagiosHow to use tmpwatch Command in LinuxLinux Interview Questions and Answers for L2 - IIHow to Create LVM Partition in RHEL 6 / CentoOSbc Command Not Found in CentOS / RHEL / Fedora / UbuntuHow to Set or Increase Memory Heap Size in Apache TomcatHow to Start, Stop, Restart, Check Status IIS Service by Command LineMount You Must Specify The Filesystem Type in LinuxHow to Install Apache JMeter on Ubuntu-14.04, Fedora-20, CentOS-7How to Install Mosquitto On your Ubuntu / Debian Linux / Unix : Important Exim Commands NGINX: [emerg] bind() to 0.0.0.0:80 failed 98: Address already in useHow Can I increase PHPmyAdmin Import File Size in XAMPPHow to Install AVCONV on CentOS, RHEL 7 / 6 Bash: SCP Command Not found on Linux SystemHow to Disable IPV6 Ubuntu 15.04, CentOS 7, Fedora 23 How to Install Mosquitto 1.4.8 Manually on Your Ubuntu /Debian How to Setup forever and Node.js to Run It on LinuxWrite Simple Shell Command to Rename Entire file .txt to .js in Linux Navigation Linux Centos Ubuntu Linux Commands MySQL Apache PHP Nagios Shell Script Windows Xampp Yum CentoOS FFMPEG Unix Recently Viewed Allow Remote Access MyS