anchor.diff:  %% External functions
   %%====================================================================
   
  -%%--------------------------------------------------------------------
  -%% Function: url_to_dstlist(URL, ApproxMsgSize, ReqURI)
  +
  +%%--------------------------------------------------------------------
  +%% Function: url_to_dstlist_not_maddr(URL, ApproxMsgSize, ReqURI)
   %%           URL           = sipurl record(), the destination we
   %%                           should resolve
   %%           ApproxMsgSize = integer()
  
positive.code: %%--------------------------------------------------------------------
  url_to_dstlist(URL, ApproxMsgSize, ReqURI) when is_record(URL, sipurl), is_integer(ApproxMsgSize),
  						is_record(ReqURI, sipurl) ->
      Host = URL#sipurl.host,
      %% Check if URL host is either IPv4 or IPv6 address. For IPv6, host must not have surrounding brackets!
      %% Note: inet_parse:address/1 is not a supported Erlang/OTP function
  
negative.code:     %% RFC3263 #4.1 (Selecting a Transport Protocol) "Similarly, if no transport protocol is specified,
      %% and the TARGET is not numeric, but an explicit port is provided, the client SHOULD use UDP for a
      %% SIP URI, and TCP for a SIPS URI"
      IsSIPS = (URL#sipurl.proto == "sips"),
      IsTransportTLS =
  	case url_param:find(URL#sipurl.param_pairs, "transport") of
  	    [Transport] ->
  		case httpd_util:to_lower(Transport) of
  		    "tls" -> true;
  		    _ -> false
  		end;
  	    _ -> false
  	end,
      if
  	IsSIPS ->
  	    logger:log(debug, "Resolver: Port was explicitly supplied and URL protocol is SIPS - only try TLS"),
  	    host_port_to_dstlist(tls, URL#sipurl.host, sipurl:get_port(URL), ReqURI, URL#sipurl.host);
  	IsTransportTLS ->
  	    %% RFC3261 #26.2.2 (SIPS URI Scheme) does say that transport=tls is deprecated, but
  	    %% since our URI could be from a Record-Route header where it might not have been
  	    %% appropriate to use SIPS, even though a request might have used TLS for that hop,
  	    %% it seems as if we have to use the deprecated algorithm anyways...
  	    logger:log(debug, "Resolver: Port was explicitly supplied and transport parameter says TLS - only try TLS"),
  	    host_port_to_dstlist(tls, URL#sipurl.host, sipurl:get_port(URL), ReqURI, URL#sipurl.host);
  	true ->
  	    UDP = host_port_to_dstlist(udp, URL#sipurl.host, sipurl:get_port(URL), ReqURI, URL#sipurl.host),
  	    case ApproxMsgSize > 1200 of
  		true ->
  