<%
  def record_id(id)
    if defined? :print_record_ids
      ";; RECORDS: #{id}\n"
    end
  end
%>$TTL 1800
@       IN     SOA    ns1.<%= domain %>. root.<%= domain %>. (
                       <%= serialno %> ; serial#
                       1800            ; refresh, seconds
                       1800            ; retry, seconds
                       1800            ; expire, seconds
                       1800 )          ; minimum TTL, seconds

<% 
  unless dns_servers.nil?
    dns_servers.each { |server| 
%><%= domain %>.            IN     NS     <%= server[:name] %>.
<%
    }
  end

%><%= record_id('naptr') %><%

  naptr_protocols.each { |proto| 
  protoCode = 'SIP+D2' + proto[0,1].upcase  # SIP+D2T
%><%= domain %>.               IN      NAPTR   2 0 "s" "<%= protoCode %>" "" _sip._<%= proto %>.<%= domain %>.
<%} 

%><%= record_id('proxy') %><%

  # distribute traffic equally for now to each proxy
  sip_protocols.each { |proto|
    if proxy_servers
      proxy_servers.each { |server| 
        if proto == 'tls'
%>_sips._tcp.<%= domain %>.     IN      SRV     10 10 5061 <%= server[:name] %>.
_sip._tls.<%= domain %>.     IN      SRV     10 10 5061 <%= server[:name] %>.
<%
        else

%>_sip._<%= proto %>.<%= domain %>.     IN      SRV     10 10 5060 <%= server[:name] %>.
<%      end
      }
    end
  }

%><%= record_id('rr') %><%

  if resource_records
    resource_records.each { |rr|
      if rr[:records]
        rr[:records].each { |a|
%><%= rr[:proto] %>.<%= rr[:resource] %>.<%= domain %>.   IN    SRV   10 10 <%= a[:port] %> <%= a[:target] %>.
<%
          rr[:records].each { |b|
            # give priority to local registrar
            rr_priority = (a == b ? '10' : '20')
%><%= rr[:proto] %>.<%= rr[:resource] %>.<%= a[:name] %>.   IN    SRV   <%= rr_priority %> 10 <%= b[:port] %> <%= b[:target] %>.
<%        } 
        }
      end
    } 
  end

%><%= record_id('im') %><%

  if im_servers
    im_servers.each { |server| 
%>_xmpp-server._tcp.<%= domain %>.     IN   SRV   10  10  5269  <%= server[:name] %>.
_xmpp-client._tcp.<%= domain %>.     IN   SRV   10  10  5222  <%= server[:name] %>.
_xmpp-server._tcp.conference.<%= domain %>.     IN   SRV   10  10  5222  <%= server[:name] %>.
_xmpp-client._tcp.conference.<%= domain %>.     IN   SRV   10  10  5222  <%= server[:name] %>.
<%  } 
  end

%><%= record_id('a') %><%
  if all_servers
    all_servers.each { |server| 
%><%= server[:name] %>.           IN      A       <%= server[:ipv4] %>
<%  }
  end
%>
<HOSTNAME>.            IN     A <IP-ADDRESS>

ev.
<%= sys.hostname %> IN A <%= sys.ipv4 %>
or
<%= sys[:hostname] %> IN A <%= sys[:ipv4] %>