lxc-config/templates/rdns-zone.erb

@     IN SOA   <%= data["zone"]["soa"] %> <%= data["zone"]["hostmaster"] %> (
                    <%= data["zone"]["serial"] %> ; serial
                    <%= data["zone"]["refresh"] %> ; refresh
                    <%= data["zone"]["retry"] %> ; retry
                    <%= data["zone"]["expire"] %> ; expire
                    <%= data["zone"]["minimum"] %>) ; minimum
<% data["network"].each do |name, value| -%>
<% if value["ns"] -%>
  IN NS <%= name %>
<% end -%>
<% end -%>

<% data["network"].each do |name, value| -%>
<% if value["ns"] -%>
<% if value["ipv4"] -%>
<%= name %> A <%= NetAddr::CIDR.create(value["ipv4"]).ip(Short: true) %>
<% end -%>
<% if value["ipv6"] -%>
<%= name %> AAAA <%= NetAddr::CIDR.create(value["ipv6"]).ip(Short: true) %>
<% end -%>
<% end -%>
<% end -%>

<% pointers do |addr, name| -%>
<%= addr %> PTR <%= name %>.<%= data["zone"]["domain"] %>.
<% end -%>