CentOS 7 disable IPv6 SLAAC

To disable slaac on a CentOS 7 server /etc/sysconfig/network must be edited.  It must contain these two lines.

NETWORKING_IPV6=yes
IPV6_AUTOCONF=no
/etc/sysconfig/network-scripts/ifcfg-ethx must also be edited.  It must contain this line.
IPV6_AUTOCONF=no
‘/sbin/service network restart’ to restart your server’s networking.

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