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Full Discussion: Issue on resolv.conf
Operating Systems Linux Red Hat Issue on resolv.conf Post 302753873 by admin_xor on Wednesday 9th of January 2013 01:28:34 PM
Old 01-09-2013
You can safely turn off the NetworkManager service. It's good for a Desktop computer but not for a server.
Code:
chkconfig NetworkManager off
service NetworkManager stop

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RDNSSD(8)						      System Manager's Manual							 RDNSSD(8)

NAME
rdnssd - IPv6 Recursive DNS Server discovery Daemon SYNOPSIS
rdnssd [-f] [-H merge-hook] [-r resolv-file] [-p pidfile] [-u username] DESCRIPTON
rdnssd is a daemon program providing client-side support for DNS configuration using the Recursive DNS Server (RDNSS) option, as described in RFC 5006. Its purpose is to supply IPv6 DNS resolvers through stateless autoconfiguration, carried by Router Advertisements. rdnssd parses RDNSS options and keeps track of resolvers to write nameservers entries to a resolv.conf(5) configuration file. By default, it writes its own separate file, and may call an external hook to merge it with the main /etc/resolv.conf. This is aimed at easing coexis- tence with concurrent daemons, especially IPv4 ones, updating /etc/resolv.conf too. On Linux, since version 2.6.24, rdnssd takes advantage of a new netlink interface, forwarding RDNSS options validated by the kernel to userland. Otherwise, it merely listens to all ICMPv6 traffic through a raw socket. OPTIONS
-f or --foreground Do not detach from the console. Run the program in the foreground. -H merge-hook or --merge-hook merge-hook Execute this hook whenever resolv.conf is updated. If this option is not specified, then no hook will be called. -h or --help Display some help and exit. -p pidfile or --pidfile pidfile Override the location of the pidfile. -r resolv-file or --resolv-file resolv-file Set the path to the generated resolv.conf file. -u username or --user username Override the user that the program will run as. By default, it runs as nobody. -V or --version Display program version and license and exit. FILES
/etc/rdnssd/merge-hook A basic merge hook shipped with rdnssd, to be called with the -H option. /var/run/rdnssd/resolv.conf The default resolv.conf(5) file that rdnssd writes its configuration to. /var/run/rdnssd.pid The process-id file. BUGS
rdnssd does not keep track of the lifetimes of the routers associated with some DNS resolvers, whereas it should to strictly comply with RFC 5006. When rdnssd uses a raw socket instead of the netlink kernel interface, it does not validate received Neighbor Discovery traffic in any way. For example, it will always consider Router Advertisement packets, whereas it should not if the host is configured as a router. When the netlink interface is used, such validation is done by the kernel. SEE ALSO
resolv.conf(5), rdisc6(8), ipv6(7) AUTHOR
Pierre Ynard <linkfanel at yahoo.fr> $Id: rdnssd.8-in 575 2007-12-29 21:55:43Z linkfanel $ http://www.remlab.net/ndisc6/ rdnssd $Date: 2007-12-29 23:55:43 +0200 (Sat, 29 Dec 2007) $ RDNSSD(8)
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