I want to configur DNS in Rathat 9. I have 2 host name. for example.

hotmail.com
yahoo.com

IP behind ns1.hotmail.com and ns1.yahoo.com is same for example 192.168.1.4

Secoundly my web and mail server IP is 192.168.1.3 and the access link is mail.yahoo.com and mail.hotmail.com.

Thiredly my FTP is also configured on IP 192.168.1.2

Can you please Guied me that how is set my DNS server.
Thanks and regards,
Shah Jehan

zone “mydomain.com” in {
type master;
file “mydomain.com.ns”;
allow-update { none; };
};

zone “12.168.192.in-addr.arpa” in {
type master;
file “12-168-192.in-addr.arpa.ns”;
allow-update { none; };
};

vi /var/named/chroot/var/named/mydomain.com.ns
****
$TTL 1d

@ IN SOA ns.mydomain.com. root (
;mydomain.com. IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
2010031500 ; se = serial number
3h ; ref = refresh
15m ; ret = update retry
3w ; ex = expiry
3h ; min = minimum
)

IN NS ns.mydomain.com.

; private hosts
IN NS 192.168.12.3

ns IN A 192.168.12.3
fish IN A 192.168.12.4
whale IN A 192.168.12.5
monkey IN A 192.168.12.6
horse IN A 192.168.12.7
cow IN A 192.168.12.8
mainserver IN A 192.168.12.2

***********************

vi /var/named/chroot/var/named/12-168-192.in-addr.arpa.ns

*******
$TTL 1d
@ IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
2010031500 ; se = serial number
3h ; ref = refresh
15m ; ret = update retry
3w ; ex = expiry
3h ; min = minimum
)

@ IN NS ns.mydomain.com.

; private hosts, reverse lookup
3 IN PTR ns.mydomain.com.

2 IN PTR mainserver.mydomain.com.
3 IN PTR centos.mydomain.com.
4 IN PTR fish.mydomain.com.
5 IN PTR whale.mydomain.com.
6 IN PTR monkey.mydomain.com.
7 IN PTR horse.mydomain.com.
8 IN PTR cow.mydomain.com.

****************************************
the error is

[root@centos etc]# nslookup 192.168.12.2
Server: 192.168.12.3
Address: 192.168.12.3#53

2.12.168.192.in-addr.arpa name = mainserver.mydomain.com.

[root@centos etc]# nslookup mainserver
Server: 192.168.12.3
Address: 192.168.12.3#53

** server can’t find mainserver: NXDOMAIN

[root@centos etc]#

kindly guide.

Best Regards,

*******************************
include “/etc/rndc.key”;

controls {
inet 127.0.0.1 allow { localhost; } keys { “rndc-key”; };
};

options {
allow-recursion { 127.0.0.1; 192.168.1.1; }; // 192.168.1.1 is the LAN interface of internally connected network
/* make named use port 53 for the source of all queries, to allow
* firewalls to block all ports except 53:
*/

// query-source port 53;

/* We no longer enable this by default as the dns posion exploit
has forced many providers to open up their firewalls a bit */

// Put files that named is allowed to write in the data/ directory:
directory “/var/named”; // the default
pid-file “/var/run/named/named.pid”;
dump-file “data/cache_dump.db”;
statistics-file “data/named_stats.txt”;
/* memstatistics-file “data/named_mem_stats.txt”; */
};

logging {
/* If you want to enable debugging, eg. using the ‘rndc trace’ command,
* named will try to write the ‘named.run’ file in the $directory (/var/named”).
* By default, SELinux policy does not allow named to modify the /var/named” directory,
* so put the default debug log file in data/ :
*/
channel default_debug {
file “data/named.run”;
severity dynamic;
};
};

acl “safe-subnet” { 192.168.1.0/24 ; };

view “localhost_resolver” {
/* This view sets up named to be a localhost resolver ( caching only nameserver ).
* If all you want is a caching-only nameserver, then you need only define this view:
*/
match-clients { 127.0.0.0/24; safe-subnets; };
match-destinations { localhost; safe-subnets; };
recursion yes;

zone “.” IN {
type hint;
file “/var/named/named.ca”;
};

zone “mydomain.com” {

type master;
file “/var/named/mydomain.com.zone”;
};

zone “1.168.192.in-addr.arpa” {
type master;
file “/var/named/192-168-1.zone”;
};

*******************************************

/var/named/mydomain.com.zone

———————
$TTL 3D

@ IN SOA mainserver.mydomain.com. hostmaster.mydomain.com.

(

200211152
3600
3600
3600
3600

)

localhost A 127.0.0.1
mainserver A 192.168.1.1
rashid A 192.168.1.2

————————————-

/var/named/192-168-1.zone

———————–

$TTL 3D

@ IN SOA mainserver.mydomain.com. hostmaster.mydomain.com.

(

200303301
8H
2H
4W
1D

)

1 PTR mainserver.mydomain.com
2 PTR rashid.mydomain.com

————————————–

service named restart

SUCCESSFULLY RESTARTED THE SERVICE

—————
[root@mainserver named]# dig centos.com

; <> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <> centos.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14759
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;centos.com. IN A

;; ANSWER SECTION:
centos.com. 86400 IN A 87.106.187.200

;; AUTHORITY SECTION:
centos.com. 172800 IN NS ns65.1und1.de.
centos.com. 172800 IN NS ns66.1und1.de.

;; ADDITIONAL SECTION:
ns65.1und1.de. 76603 IN A 195.20.224.210
ns66.1und1.de. 76603 IN A 212.227.123.58

;; Query time: 419 msec
;; SERVER: 192.168.12.1#53(192.168.12.1)
;; WHEN: Wed May 26 14:34:40 2010
;; MSG SIZE rcvd: 122

IN THIRD LAST LINE HE IS SHOWING THE IP OF THAT INTERFACE THAT IS CONNECTED TO ROUTER.

——————-

[root@mainserver named]# ping rashid.mydomain.com
PING rashid.mydomain.com (216.34.94.184) 56(84) bytes of data.

— rashid.mydomain.com ping statistics —
5 packets transmitted, 0 received, 100% packet loss, time 4008ms

[root@mainserver named]# dig rashid.mydomain.com

; <> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <> rashid.mydomain.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53633
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0

;; QUESTION SECTION:
;rashid.mydomain.com. IN A

;; ANSWER SECTION:
rashid.mydomain.com. 290 IN A 216.34.94.184

;; AUTHORITY SECTION:
mydomain.com. 524 IN NS ns3.mydomain.com.
mydomain.com. 524 IN NS ns1.mydomain.com.
mydomain.com. 524 IN NS ns4.mydomain.com.
mydomain.com. 524 IN NS ns2.mydomain.com.

;; Query time: 37 msec
;; SERVER: 192.168.12.1#53(192.168.12.1)
;; WHEN: Wed May 26 14:36:21 2010
;; MSG SIZE rcvd: 125
———————————–

uninstall all the bind packages then reinstall the BIND packages
using below command
yum install bind bind-utils caching-nameserver bind-libs

restart the system

ping mainserver.mydomain.com
pinging …………..

WHY………………………………

—————————————-
**Unmatched Entries**
/etc/named.conf:3: unknown option ‘keys’: 1 Time(s)
/etc/named.conf:4: missing ‘;’ before ‘}’: 3 Time(s)
/var/named/12.168.192.rev:4: unknown RR type ‘1M’: 2 Time(s)
/var/named/mydomain.com.zone:4: unknown RR type ‘1M’: 2 Time(s)
12.168.192.in-addr.arpa.zone:4: unknown RR type ‘7200′: 2 Time(s)
12.168.192.in-addr.arpa.zone:6: unknown RR type ‘7200′: 1 Time(s)
_default/ 0.0.127.in-addr.arpa/IN: file not found: 1 Time(s)
_default/0.0.127.in-addr.arpa/IN: file not found: 2 Time(s)
_default/12.168.192.in-addr.arpa/IN: unexpected end of input: 5 Time(s)
_default/localhost/IN: file not found: 1 Time(s)
_default/mydomain.com/IN: file not found: 1 Time(s)
_default/mydomain.com/IN: unexpected end of input: 4 Time(s)
dns_rdata_fromtext: /var/named/12.168.192.rev:2: near eol: unexpected end of input: 2 Time(s)
dns_rdata_fromtext: /var/named/mydomain.com.zone:2: near eol: unexpected end of input: 2 Time(s)
dns_rdata_fromtext: 12.168.192.in-addr.arpa.zone:2: near eol: unexpected end of input: 2 Time(s)
dns_rdata_fromtext: 12.168.192.in-addr.arpa.zone:4: near eol: unexpected end of input: 1 Time(s)
dns_rdata_fromtext: mydomain.com.zone:3: near eol: unexpected end of input: 2 Time(s)
mydomain.com.zone:5: unknown RR type ‘7200′: 2 Time(s)

———————- Named End ————————-

configure properly but giving below mentioned error when restarting the named server.

[root@mainserver named]# service named restart
Stopping named: [ OK ]
Starting named:
Error in named configuration:
zone 0.0.127.in-addr.arpa/IN: loading master file 0.0.127.in-addr.arpa.zone: file not found
_default/0.0.127.in-addr.arpa/IN: file not found
dns_rdata_fromtext: 12.168.192.in-addr.arpa.zone:2: near eol: unexpected end of input
12.168.192.in-addr.arpa.zone:4: unknown RR type ‘7200′
zone 12.168.192.in-addr.arpa/IN: loading master file 12.168.192.in-addr.arpa.zone: unexpected end of input
_default/12.168.192.in-addr.arpa/IN: unexpected end of input
zone localhost/IN: loaded serial 1
dns_rdata_fromtext: mydomain.com.zone:3: near eol: unexpected end of input
mydomain.com.zone:5: unknown RR type ‘7200′
zone mydomain.com/IN: loading master file mydomain.com.zone: unexpected end of input
_default/mydomain.com/IN: unexpected end of input
[FAILED]

******************************************************
named.conf
————-
//
// sample BIND configuration file
//

options {
// tell named where to find files mentioned below
directory “/var/named”;
// on a multi-homed host, you might want to tell named
// to listen for queries only on certain interfaces
listen-on { 127.0.0.1; 10.11.12.0/24; };
};

// The single dot (.) is the root of all DNS namespace, so
// this zone tells named where to start looking for any
// name on the Internet
zone “.” IN {
// a hint type means that we’ve got to look elsewhere
// for authoritative information
type hint;
file “named.root”;
};

// Where the localhost hostname is defined
zone “localhost” IN {
// a master type means that this server needn’t look
// anywhere else for information; the localhost buck
// stops here.
type master;
file “localhost.zone”;
// don’t allow dynamic DNS clients to update info
// about the localhost zone
allow-update { none; };
};

// Where the 127.0.0.0 network is defined
zone “0.0.127.in-addr.arpa” IN {
type master;
file “revp.127.0.0″;
allow-update { none; };
};

zone “mydomain.com” IN {
// this is the authoritative server for
// schroder.net info
type master;
file “mydomain.com.zone”;
};

zone “12.168.192.in-addr.arpa” {
// this is the authoritative server for
// the 10.11.12.0 network
type master;
file “revp.12.168.192″;
};

—————————————-

*********************
search saudivalves.com

nameserver 192.168.12.1
*************************8

and the vi /var/log/messages

*******************************
May 24 14:31:56 centos named[5526]: starting BIND 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 -u named -c /etc/named.caching-nameserver.conf -t /var/named/chroot
May 24 14:31:56 centos named[5526]: adjusted limit on open files from 1024 to 1048576
May 24 14:31:56 centos named[5526]: found 1 CPU, using 1 worker thread
May 24 14:31:56 centos named[5526]: using up to 4096 sockets
May 24 14:31:56 centos named[5526]: loading configuration from ‘/etc/named.caching-nameserver.conf’
May 24 14:31:56 centos named[5526]: using default UDP/IPv4 port range: [1024, 65535]
May 24 14:31:56 centos named[5526]: using default UDP/IPv6 port range: [1024, 65535]
May 24 14:31:56 centos named[5526]: listening on IPv6 interface lo, ::1#53
May 24 14:31:56 centos named[5526]: listening on IPv4 interface lo, 127.0.0.1#53
May 24 14:31:56 centos named[5526]: command channel listening on 127.0.0.1#953
May 24 14:31:56 centos named[5526]: command channel listening on ::1#953
May 24 14:31:56 centos named[5526]: the working directory is not writable
May 24 14:31:56 centos named[5526]: zone 0.in-addr.arpa/IN/localhost_resolver: loaded serial 42
May 24 14:31:56 centos named[5526]: zone 0.0.127.in-addr.arpa/IN/localhost_resolver: loaded serial 1997022700
May 24 14:31:56 centos named[5526]: zone 255.in-addr.arpa/IN/localhost_resolver: loaded serial 42
May 24 14:31:56 centos named[5526]: zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN/localhost_resolver: loaded serial 1997022700
May 24 14:31:56 centos named[5526]: zone localdomain/IN/localhost_resolver: loaded serial 42
May 24 14:31:56 centos named[5526]: zone localhost/IN/localhost_resolver: loaded serial 42
May 24 14:31:56 centos named[5526]: running
May 24 14:38:00 centos avahi-daemon[3721]: Invalid query packet.
May 24 14:42:39 centos last message repeated 6 times
May 24 14:42:40 centos last message repeated 2 times
May 24 14:42:54 centos avahi-daemon[3721]: Withdrawing address record for 192.168.12.3 on eth0.
May 24 14:42:54 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:42:54 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:42:54 centos avahi-daemon[3721]: Interface eth0.IPv4 no longer relevant for mDNS.
May 24 14:42:54 centos avahi-daemon[3721]: Withdrawing address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:42:54 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:42:54 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:42:54 centos avahi-daemon[3721]: Interface eth0.IPv6 no longer relevant for mDNS.
May 24 14:42:56 centos avahi-daemon[3721]: New relevant interface eth0.IPv6 for mDNS.
May 24 14:42:56 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:42:56 centos avahi-daemon[3721]: Registering new address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:42:59 centos avahi-daemon[3721]: New relevant interface eth0.IPv4 for mDNS.
May 24 14:42:59 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:42:59 centos avahi-daemon[3721]: Registering new address record for 192.168.12.3 on eth0.
May 24 14:43:02 centos named[5526]: shutting down: flushing changes
May 24 14:43:02 centos named[5526]: stopping command channel on 127.0.0.1#953
May 24 14:43:02 centos named[5526]: stopping command channel on ::1#953
May 24 14:43:02 centos named[5526]: no longer listening on ::1#53
May 24 14:43:02 centos named[5526]: no longer listening on 127.0.0.1#53
May 24 14:43:02 centos named[5526]: exiting
May 24 14:43:05 centos named[6215]: starting BIND 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 -u named -c /etc/named.caching-nameserver.conf -t /var/named/chroot
May 24 14:43:05 centos named[6215]: adjusted limit on open files from 1024 to 1048576
May 24 14:43:05 centos named[6215]: found 1 CPU, using 1 worker thread
May 24 14:43:05 centos named[6215]: using up to 4096 sockets
May 24 14:43:05 centos named[6215]: loading configuration from ‘/etc/named.caching-nameserver.conf’
May 24 14:43:05 centos named[6215]: using default UDP/IPv4 port range: [1024, 65535]
May 24 14:43:05 centos named[6215]: using default UDP/IPv6 port range: [1024, 65535]
May 24 14:43:05 centos named[6215]: listening on IPv6 interface lo, ::1#53
May 24 14:43:05 centos named[6215]: listening on IPv4 interface lo, 127.0.0.1#53
May 24 14:43:05 centos named[6215]: command channel listening on 127.0.0.1#953
May 24 14:43:05 centos named[6215]: command channel listening on ::1#953
May 24 14:43:05 centos named[6215]: the working directory is not writable
May 24 14:43:05 centos named[6215]: zone 0.in-addr.arpa/IN/localhost_resolver: loaded serial 42
May 24 14:43:05 centos named[6215]: zone 0.0.127.in-addr.arpa/IN/localhost_resolver: loaded serial 1997022700
May 24 14:43:05 centos named[6215]: zone 255.in-addr.arpa/IN/localhost_resolver: loaded serial 42
May 24 14:43:05 centos named[6215]: zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN/localhost_resolver: loaded serial 1997022700
May 24 14:43:05 centos named[6215]: zone localdomain/IN/localhost_resolver: loaded serial 42
May 24 14:43:05 centos named[6215]: zone localhost/IN/localhost_resolver: loaded serial 42
May 24 14:43:05 centos named[6215]: running
May 24 14:44:29 centos system-config-network[6302]: -+ //etc/modprobe.conf eth0 alias vmxnet
May 24 14:44:29 centos system-config-network[6302]: chmod 0644 //etc/sysconfig/networking/devices/ifcfg-eth0
May 24 14:44:29 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:44:40 centos avahi-daemon[3721]: Withdrawing address record for 192.168.12.3 on eth0.
May 24 14:44:40 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:44:40 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:44:40 centos avahi-daemon[3721]: Interface eth0.IPv4 no longer relevant for mDNS.
May 24 14:44:40 centos avahi-daemon[3721]: Withdrawing address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:44:40 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:44:40 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:44:40 centos avahi-daemon[3721]: Interface eth0.IPv6 no longer relevant for mDNS.
May 24 14:44:42 centos avahi-daemon[3721]: New relevant interface eth0.IPv4 for mDNS.
May 24 14:44:42 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:44:42 centos avahi-daemon[3721]: Registering new address record for 192.168.12.3 on eth0.
May 24 14:44:42 centos avahi-daemon[3721]: New relevant interface eth0.IPv6 for mDNS.
May 24 14:44:42 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:44:42 centos avahi-daemon[3721]: Registering new address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:45:44 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:49:38 centos last message repeated 2 times
May 24 14:49:39 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:49:54 centos avahi-daemon[3721]: Withdrawing address record for 192.168.12.3 on eth0.
May 24 14:49:54 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:49:54 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:49:54 centos avahi-daemon[3721]: Interface eth0.IPv4 no longer relevant for mDNS.
May 24 14:49:54 centos avahi-daemon[3721]: Withdrawing address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:49:54 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:49:54 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:49:54 centos avahi-daemon[3721]: Interface eth0.IPv6 no longer relevant for mDNS.
May 24 14:49:56 centos avahi-daemon[3721]: New relevant interface eth0.IPv4 for mDNS.
May 24 14:49:56 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:49:56 centos avahi-daemon[3721]: Registering new address record for 192.168.12.3 on eth0.
May 24 14:49:57 centos avahi-daemon[3721]: New relevant interface eth0.IPv6 for mDNS.
May 24 14:49:57 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:49:57 centos avahi-daemon[3721]: Registering new address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:50:10 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:50:11 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:50:13 centos avahi-daemon[3721]: Withdrawing address record for 192.168.12.3 on eth0.
May 24 14:50:13 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:50:13 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:50:13 centos avahi-daemon[3721]: Interface eth0.IPv4 no longer relevant for mDNS.
May 24 14:50:13 centos avahi-daemon[3721]: Withdrawing address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:50:13 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:50:13 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:50:13 centos avahi-daemon[3721]: Interface eth0.IPv6 no longer relevant for mDNS.
May 24 14:50:15 centos avahi-daemon[3721]: New relevant interface eth0.IPv4 for mDNS.
May 24 14:50:15 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:50:15 centos avahi-daemon[3721]: Registering new address record for 192.168.12.3 on eth0.
May 24 14:50:15 centos avahi-daemon[3721]: New relevant interface eth0.IPv6 for mDNS.
May 24 14:50:15 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:50:15 centos avahi-daemon[3721]: Registering new address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:50:44 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:50:45 centos nm-system-settings: ifcfg-rh: updating /etc/sysconfig/network-scripts/ifcfg-eth0
May 24 14:50:46 centos avahi-daemon[3721]: Withdrawing address record for 192.168.12.3 on eth0.
May 24 14:50:46 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:50:46 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:50:46 centos avahi-daemon[3721]: Interface eth0.IPv4 no longer relevant for mDNS.
May 24 14:50:46 centos avahi-daemon[3721]: Withdrawing address record for fe80::20c:29ff:fee8:6887 on eth0.
May 24 14:50:46 centos avahi-daemon[3721]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:50:46 centos avahi-daemon[3721]: iface.c: interface_mdns_mcast_join() called but no local address available.
May 24 14:50:46 centos avahi-daemon[3721]: Interface eth0.IPv6 no longer relevant for mDNS.
May 24 14:50:49 centos avahi-daemon[3721]: New relevant interface eth0.IPv4 for mDNS.
May 24 14:50:49 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.12.3.
May 24 14:50:49 centos avahi-daemon[3721]: Registering new address record for 192.168.12.3 on eth0.
May 24 14:50:49 centos avahi-daemon[3721]: New relevant interface eth0.IPv6 for mDNS.
May 24 14:50:49 centos avahi-daemon[3721]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::20c:29ff:fee8:6887.
May 24 14:50:49 centos avahi-daemon[3721]: Registering new address record for fe80::20c:29ff:fee8:6887 on eth0.
*******************************

and when I

ping localhost

it pings.

small mistake or configuration somewhere