Howto disable IPv6 on Centos 6.3 or Redhat 6.3 RHEL

Howto disable IPv6 on Centos 6.3 or Redhat 6.3 RHEL

 

1. Check IPv6 on your Centos or RHEL Server

[root@Centos6 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
link/ether 00:0c:29:55:52:41 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.112/24 brd 192.168.0.255 scope global eth0
inet6 fe80::20c:29ff:fe55:5241/64 scope link
valid_lft forever preferred_lft forever
[root@Centos6 ~]#

2. Disabe ipv6 on your server

[root@Centos6 ~]# vi /etc/modprobe.d/disable-ipv6.conf
install ipv6 /bin/true
[root@Centos6 ~]# vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=Centos6.3
GATEWAY=192.168.0.1
[root@Centos6 ~]# echo “net.ipv6.conf.all.disable_ipv6 = 1” >> /etc/sysctl.conf
[root@Centos6 ~]# init 6

3. Check your IP Address on your server after reboot

[root@Centos6 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:55:52:41 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.112/24 brd 192.168.0.255 scope global eth0
[root@Centos6 ~]#

That’s all. Thanks for using IThelpblog.com.

 

Leave a reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>