CentOS 6
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ネットワークの設定2014/08/01

[1] ネットワークの設定を固定IPアドレスに変更します。
[root@dlp ~]#
vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=00:50:43:00:3B:AE
TYPE=Ethernet
UUID=c1539085-73d7-4455-ac82-88f26464458a
# 変更

ONBOOT=
yes

NM_CONTROLLED=yes
# 変更

BOOTPROTO=
none

# 以下、追記

# サーバーに割り当てるIPアドレス

IPADDR=10.0.0.30
# サブネットマスク

NETMASK=255.255.255.0
# デフォルトゲートウェイ

GATEWAY=10.0.0.1
# DNSサーバーのIPアドレス

DNS1=10.0.0.10
IPV6INIT=no
USERCTL=no
[root@dlp ~]#
/etc/rc.d/init.d/network restart

Shutting down interface eth0: [  OK  ]
Shutting down loopback interface: [  OK  ]
Bringing up loopback interface: [  OK  ]
Bringing up interface eth0: [  OK  ]
[root@dlp ~]#
chkconfig network on

[root@dlp ~]#
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:cd:9c:2d brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fecd:9c2d/64 scope link
       valid_lft forever preferred_lft forever
[2] 必要なければIPv6を無効にしておきます。
[root@dlp ~]#
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:cd:9c:2d brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fecd:9c2d/64 scope link
       valid_lft forever preferred_lft forever
[root@dlp ~]#
vi /etc/sysctl.conf
# 最終行に追記

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
# 変更を反映

[root@dlp ~]#
sysctl -p
[root@dlp ~]#
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:cd:9c:2d brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global eth0
       valid_lft forever preferred_lft forever
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