Allow "type forward" without file-statement

[byteSamurai]

As far as I see, its currently not possible to add a forward only zone, because the "file"-statement is not allow while using type forward

zone "domain.tld" {
    type forward;
    forward only;
    #file [...] (not allowed)
    forwarders {
                123.123.123.123; // dns-server of domain.tld
        };
};

I really far away being a ruby expert, so: Is this a fix?
_zone.erb_

zone "<%= @zone %>" {
  type <%= @zone_type %>;
<% if @zone_notify -%>
  notify <%= @zone_notify %>;
<% end -%>
<% if @zone_type != "forward" %>
  file "<%= @zone_file %>";
<% end -%>
<% if @zone_type == 'slave' -%>
  masters { <%= @slave_masters %>;};
<% elsif @zone_type == 'master' or   @zone_type == 'forward'-%>
<% if @allow_transfer -%>
  allow-transfer {
<% @allow_transfer.each do |ip| -%>
  <%= ip %>;
<% end -%>
  };
<% end -%>

<% if !@allow_forwarder.empty? -%>
  forward <%= @forward_policy %>;
  forwarders {
<% @allow_forwarder.each do |ip| -%>
  <%= ip %>;
<% end -%>
  };
<% end -%>
<% end -%>

};

[solarkennedy]

I think that would be fine. I would accept a PR if it was accompanied with tests for this.

I agree that the file line should not be there on a forward zone
ftp://ftp.isc.org/isc/bind9/cur/9.10/doc/arm/Bv9ARM.ch06.html#zone_statement_grammar

[byteSamurai]

okay I try to do it next week

[roderickm]

This issue can be closed. The suggested changes and tests were committed in 19ebe75.