anchor.diff:  record must resolve to an unicast IPv4 address for the control plane machine,
   and the records must be resolvable from all the nodes in the cluster.
   
  -|`_etcd-server-ssl._tcp.<cluster_name>.<base_domain>`
  +|`_etcd-server-ssl._tcp.<cluster_name>.<base_domain>.`
   |For each control plane machine, {product-title} also requires a SRV DNS
   record for etcd server on that machine with priority `0`, weight `10` and
   port `2380`. A cluster that uses three control plane machines requires the
  
positive.code: |Description
  
  .2+a|Kubernetes API
  |`api.<cluster_name>.<base_domain>`
  |This DNS A/AAAA or CNAME record must point to the load balancer
  for the control plane machines. This record must be resolvable by both clients
  external to the cluster and from all the nodes within the cluster.
  
  |`api-int.<cluster_name>.<base_domain>`
  |This DNS A/AAAA or CNAME record must point to the load balancer
  for the control plane machines. This record must be resolvable from all the
  nodes within the cluster.
  
negative.code: [options="nowrap"]
  ----
  # _service._proto.name.                            TTL    class SRV priority weight port target.
  _etcd-server-ssl._tcp.<cluster_name>.<base_domain>.  86400 IN    SRV 0        10     2380 etcd-0.<cluster_name>.<base_domain>
  _etcd-server-ssl._tcp.<cluster_name>.<base_domain>.  86400 IN    SRV 0        10     2380 etcd-1.<cluster_name>.<base_domain>
  _etcd-server-ssl._tcp.<cluster_name>.<base_domain>.  86400 IN    SRV 0        10     2380 etcd-2.<cluster_name>.<base_domain>
  ----
  
  |===
  