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ping产生的DUP！解决方法

[root@localhost php-5.3.27]# ping baidu.com

PING baidu.com (111.13.101.208) 56(84) bytes of data.

64 bytes from 111.13.101.208: icmp_seq=1 ttl=49 time=26.6 ms

64 bytes from 111.13.101.208: icmp_seq=1 ttl=49 time=26.8 ms (DUP!)

64 bytes from 111.13.101.208: icmp_seq=1 ttl=48 time=26.8 ms (DUP!)

From 192.168.199.196: icmp_seq=2 Redirect Network(New nexthop: 192.168.199.1)

64 bytes from 111.13.101.208: icmp_seq=2 ttl=49 time=26.9 ms

64 bytes from 111.13.101.208: icmp_seq=2 ttl=49 time=26.9 ms (DUP!)

64 bytes from 111.13.101.208: icmp_seq=2 ttl=48 time=26.9 ms (DUP!)

64 bytes from 111.13.101.208: icmp_seq=2 ttl=48 time=27.0 ms (DUP!)

From 192.168.199.196: icmp_seq=3 Redirect Network(New nexthop: 192.168.199.1)

64 bytes from 111.13.101.208: icmp_seq=3 ttl=49 time=25.8 ms

64 bytes from 111.13.101.208: icmp_seq=3 ttl=49 time=25.9 ms (DUP!)

64 bytes from 111.13.101.208: icmp_seq=3 ttl=48 time=25.9 ms (DUP!)

解决方法：

清空/etc/udev/rules.d/70-persistent-net.rules

>/etc/udev/rules.d/70-persistent-net.rules

停掉NetworkManager服务

[root@localhost php-5.3.27]# service NetworkManager stop

Stopping NetworkManager daemon: [ OK ]

重启网络服务：

service network restart

ping baidu.com

PING baidu.com (123.125.114.144) 56(84) bytes of data.

64 bytes from 123.125.114.144: icmp_seq=1 ttl=128 time=21.1 ms

64 bytes from 123.125.114.144: icmp_seq=2 ttl=128 time=777 ms

64 bytes from 123.125.114.144: icmp_seq=3 ttl=128 time=19.9 ms

64 bytes from 123.125.114.144: icmp_seq=4 ttl=128 time=20.4 ms

64 bytes from 123.125.114.144: icmp_seq=5 ttl=128 time=19.6 ms

文章来自：http://10553403.blog.51cto.com/10543403/1826824