private void findCommunicationAddresses() throws UnknownHostException {
        communicationAddresses = new ArrayList<InetAddress>();
        if (inetAddresses.getLoopback().isEmpty()) {
            if (inetAddresses.getRemote().isEmpty()) {
                InetAddress fallback = InetAddress.getByName(null);
                logger.debug("No loopback addresses for communication, using fallback {}", fallback);

		return nil, nil, nil, nil
	}

	// At this point, we should have wasmNetworkFilterConfig or wasmHTTPFilterConfig should be unmarshalled.
	if wasmNetwork {
		if wasmNetworkFilterConfig.Config.GetVmConfig().GetCode().GetRemote() == nil {
			if wasmNetworkFilterConfig.Config.GetVmConfig().GetCode().GetLocal() == nil {
				return nil, nil, nil, fmt.Errorf("no remote and local load found in Wasm Network filter %+v", wasmNetworkFilterConfig)
			}

		errs = AppendValidation(errs, ValidateHTTPHeaderWithAuthorityOperationName(name))
		errs = AppendValidation(errs, ValidateHTTPHeaderValue(val))
	}
	for _, name := range http.Headers.GetRequest().GetRemove() {
		errs = AppendValidation(errs, ValidateHTTPHeaderOperationName(name))
	}
	for name, val := range http.Headers.GetResponse().GetAdd() {
		errs = AppendValidation(errs, ValidateHTTPHeaderOperationName(name))

	}
	return HeadersOperations{
		RequestHeadersToAdd:     requestHeadersToAdd,
		ResponseHeadersToAdd:    responseHeadersToAdd,
		RequestHeadersToRemove:  dropInternal(req.GetRemove()),
		ResponseHeadersToRemove: dropInternal(resp.GetRemove()),
		Authority:               auth,
	}
}

// TranslateRouteMatch translates match condition

			errs = appendErrors(errs, ValidateHTTPHeaderWithAuthorityOperationName(name))
			errs = appendErrors(errs, ValidateHTTPHeaderValue(val))
		}
		for _, name := range weight.Headers.GetRequest().GetRemove() {
			errs = appendErrors(errs, ValidateHTTPHeaderOperationName(name))
		}
		for name, val := range weight.Headers.GetResponse().GetAdd() {
			errs = appendErrors(errs, ValidateHTTPHeaderOperationName(name))