Default RealUrl configuration. Might expand this later.

multi-lang-domain.php

<?php

/**
 * Setup multi-language/domain config
 *
 * NOTE: Multiple domains for a single language will not work.
 *       The first defined domain is used in that case.
 */
$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['realurl']['_DOMAINS'] = array(
	'encode' => array(
		array(
			'GETvar' => 'L',
			'value' => '0',
			'useConfiguration' => 'www.machinenet.nl',
			'urlPrepend' => 'http://www2.machinenet.nl'
		),
		array(
			'GETvar' => 'L',
			'value' => '2',
			'useConfiguration' => 'www.machinenet.nl',
			'urlPrepend' => 'http://www.machinenet.co.uk'
		),
	),
	'decode' => array(
		'www.machinenet.nl' => array(
			'GETvars' => array(
				'L' => '0'
			),
			'useConfiguration' => 'www.machinenet.nl'
		),
		'www.machinenet.co.uk' => array(
			'GETvars' => array(
				'L' => '2'
			),
			'useConfiguration' => 'www.machinenet.nl'
		),
	)
);

realurl_conf.php

<?php
$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['realurl'] = array(
	'_DEFAULT' =>
	array(
		'init' => array(
			'enableCHashCache' => true,
			'appendMissingSlash' => 'ifNotFile,redirect',
			'adminJumpToBackend' => true,
			'enableUrlDecodeCache' => true,
			'enableUrlEncodeCache' => true,
			'emptyUrlReturnValue' => '/',
		),
		'pagePath' => array(
			'type' => 'user',
			'userFunc' => 'EXT:realurl/class.tx_realurl_advanced.php:&tx_realurl_advanced->main',
			'spaceCharacter' => '-',
			'languageGetVar' => 'L',
			'rootpage_id' => '1',
			'segTitleFieldList' => 'tx_realurl_pathsegment,nav_title,title,uid' // removed alias-field
		),
		'fileName' => array(
			'defaultToHTMLsuffixOnPrev' => 0,
			'acceptHTMLsuffix' => 1,
			'index' => array(
				'print' => array(
					'keyValues' => array(
						'type' => 98,
					),
				),
			),
		),
	),
);