Problema utilizando o GridLayout

TitledBorder border;
        border = BorderFactory.createTitledBorder(parent.langpack.getString("ipPanel.infoPanel"));
        
        JPanel painel = new JPanel(new GridLayout(1, 2));
        GridBagLayout novoLayout = new GridBagLayout();
        GridBagConstraints novaConstraints = new GridBagConstraints();
        String txt = parent.langpack.getString("IP: ");
        painel.setBorder(border);
        
        lblIp = new JLabel(txt);
        novaConstraints.gridx = col;
        novaConstraints.gridy = line;
        novaConstraints.gridwidth = 0;
        novaConstraints.gridheight = 0;
        novaConstraints.fill = GridBagConstraints.HORIZONTAL;
        novoLayout.addLayoutComponent(lblIp, novaConstraints);
        painel.add(lblIp);
        
        this.ipv6 = new JIpAddressV6();
        novaConstraints.gridx = col+1;
        novaConstraints.gridy = line;
        novaConstraints.gridwidth = 0;
        novaConstraints.gridheight = 0;
        novaConstraints.fill = GridBagConstraints.HORIZONTAL;
        novoLayout.addLayoutComponent(ipv6, novaConstraints);
        painel.add(ipv6);
        
        constraints.gridx = col;
		constraints.gridy = line + 9;
		constraints.gridwidth = 1;
        constraints.gridheight = 1;
        constraints.fill = GridBagConstraints.HORIZONTAL;
        layout.addLayoutComponent(painel, constraints);
        add(painel);