Named Error Network Unreachable Resolving Ipv6
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Error (network Unreachable) Resolving Ubuntu
of 1 saeed Posts: 20 Joined: 2014/05/30 14:50:33 Network Unreachable Error Quote Postby saeed ubuntu bind disable ipv6 » 2014/10/23 12:21:22 HiToday I noticed that I have some lines in my log files in /var/log/messages as follows:Code: Select allOct 23 11:39:03
Bind Options="-4"
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 error (network unreachable) resolving debian 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]: error (network unreachable) resolving 'dlv.isc.org/DNSKEY/IN': 2001:4f8:0:2::20#53
Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'dlv.isc.org/DNSKEY/IN': 2001:500:60::29#53
Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns1.isc.ultradns.net/A/IN': 2001:7fd::1#53
Oct 23 11:39:03 server named[1585]: error (network unreachable) resolving 'ns1.isc.ultradns.net/AAAA/IN': 2001:7fd::1#53
Oct 23 11:39:04 server named[1585]: error (network unreachable) resolving 'ns2.isc.ultradns.net/A/IN': 2610:a1:1014::e8#53
Oct 23 11:39:04 server named[1585]: error (network unreachable) resolving 'pdns196.ultradns.org/A/IN': 2001:500:e::1#53
Oct 23 11:39:04 ser
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 29
Debian Bind9 Disable Ipv6
14:32:11 someserver named[1459]: error (network unreachable) resolving 'www.eolprocess.com/A/IN': 2001:503:231d::2:30#53 What these
Dnssec-enable
messages say is that network that contains address 2001:503:231d::2:30 is unreachable. So, what's happening? The problem is error (unexpected rcode refused) resolving 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 system configures http://www.centos.org/forums/viewtopic.php?t=49173 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 that some DNS http://sgros.blogspot.com/2012/06/bind-and-network-unreachable-messages.html 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. January 8, 2014 at 9:41 PM
(network unreachable) – Centos https://www.croc-informatique.fr/2015/09/bind-9-error-network-unreachable-centos-7/ 7 An article by Olivier Legras Pas de Commentaire Après avoir installé Bind sur un centos 7, j’ai eu ces erreurs : Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 2001:500:f::1#53 network unreachable Sep 10 09:28:09 lnx261403P named[21321]: error (network unreachable) resolving ‘dlv.isc.org/DNSKEY/IN’: 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 error (network unreachable) 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 ‘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.i