===== Step 4: Option 1: Cloud-init / Metadata =====

	#cloud-config
	bootcmd:
	  - /usr/sbin/ifdown eth0
	  - /usr/sbin/ifup eth0
	  - /usr/sbin/ifdown eth1
	  - /usr/sbin/ifup eth1
	  - setenforce 0
	  - /sbin/sysctl -w net.ipv6.conf.all.forwarding=1
	  - /sbin/sysctl -w net.ipv6.conf.eth0.accept_ra=2
	  - /sbin/sysctl -w net.ipv6.conf.eth0.accept_ra_defrtr=1
	  - /sbin/sysctl -w net.ipv6.conf.eth0.router_solicitations=1
	packages:
	  - radvd
	runcmd:
	  - /usr/sbin/ifdown eth1
	  - /usr/sbin/ifup eth1
	  - /usr/bin/systemctl disable NetworkManager
	  - /usr/bin/systemctl start radvd
	  - echo 'complete' >> /tmp/cloud-config.log
	write_files:
	 - content: |
	     TYPE="Ethernet"
	     BOOTPROTO="dhcp"
	     DEFROUTE="yes"
	     PEERDNS="yes"
	     PEERROUTES="yes"
	     IPV4_FAILURE_FATAL="no"
	     IPV6INIT="yes"
	     IPV6_AUTOCONF="yes"
	     IPV6_DEFROUTE="yes"
	     IPV6_PEERROUTES="yes"
	     IPV6_PEERDNS="yes"
	     IPV6_FAILURE_FATAL="no"
	     NAME="eth0"
	     DEVICE="eth0"
	     ONBOOT="yes"
	   path: /etc/sysconfig/network-scripts/ifcfg-eth0
	   permissions: '0755'
	   owner: root:root
	 - content: |
	     TYPE="Ethernet"
	     BOOTPROTO=static
	     IPV6INIT=yes
	     IPV6ADDR="2001:db8:0:2::1/64"
	     NAME=eth1
	     DEVICE=eth1
	     ONBOOT=yes
	     NM_CONTROLLED=no
	   path: /etc/sysconfig/network-scripts/ifcfg-eth1
	   permissions: '0755'
	   owner: root:root
	 - content: |
	     interface eth1
	     {
		AdvSendAdvert on;
		MinRtrAdvInterval 3;
		MaxRtrAdvInterval 10;
		AdvHomeAgentFlag off;
		AdvManagedFlag on;
		AdvOtherConfigFlag on;
		prefix 2001:db8:0:2::/64
		{
		    AdvOnLink on;
		    ### On link tells the host that the default router is on the same "link" as it is
		    AdvAutonomous on;
		    AdvRouterAddr off;
		};
	     };
	   path: /etc/radvd.conf
	   permissions: '0644'
	   owner: root:root
	 - content: |
	     IPV6FORWARDING=yes
	   path: /etc/sysconfig/network
	   permissions: '0644'
	   owner: root:root