设置网卡，关闭ipv6
/etc/sysconfig/network 增加：
NETWORKING_IPV6=no


/etc/modprobe.d/dist.conf 增加：
alias net-pf-10 off
options ipv6 disable=1



RedHat 5.x

To disable IPv6 in a virtual machine running RedHat 5.x:

  1. Log in as root or superuser.

  2. If the /etc/sysconfig/network file contains the line NETWORKING_IPV6=yes, change the line to:

    NETWORKING_IPV6=no


  3. In the file /etc/modprobe.conf, add this line:

    options ipv6 disable=1

  4. Save the file and reboot the system.

After you disable IPv6, you should be able to install and configure VMware Tools successfully.



http://www.cyberciti.biz/faq/redhat-centos-disable-ipv6-networking/