How to enable split-tunneling function in China

[parkycai]

in SE version history ( http://www.softether.org/5-download/history ) page wrote:

On VPN Servers in People's Republic of China, the above five functions are currently disabled by default, under the orders from Beijing. Although Chinese users can enable these functions manually, Enterprise users in People's Republic of China are recommended to use these enterprise functions with PacketiX VPN Server 4.0 Chinese Edition.


The question is, how to enable those five functions? especially the split tunneling function. I can't find related entries in server config file. Thanks in advance!

==============
update: found it in the source code.


// Check whether some enterprise functions are restricted
//
// ** Hints by Daiyuu Nobori, written on March 19, 2014 **
//
// The following 'enterprise functions' are implemented on SoftEther VPN Server
// since March 19, 2014. However, these functions are disabled on
// SoftEther VPN Servers which run in Japan and China.
//
// - RADIUS / NT Domain user authentication
// - RSA certificate authentication
// - Deep-inspect packet logging
// - Source IP address control list
// - syslog transfer
//
// The SoftEther VPN Project intentionally disables these functions for users
// in Japan and China. The reason is: Daiyuu Nobori, the chief author of
// SoftEther VPN, has been liable to observe the existing agreements and
// restrictions between him and some companies. The agreements have regulated
// the region-limited restriction to implement and distribute the above
// enterprise functions on the SoftEther VPN open-source program.
//
// Therefore, the SoftEther VPN Project distributes the binary program and
// the source code with the "SiIsEnterpriseFunctionsRestrictedOnOpenSource"
// function. This function identifies whether the SoftEther VPN Server
// program is running in either Japan or China. If the restricted region is
// detected, then the above enterprise functions will be disabled.
//
// Please note that the above restriction has been imposed only on the
// original binaries and source codes from the SoftEther VPN Project.
// Anyone, except Daiyuu Nobori, who understands and writes the C language
// program can remove this restriction at his own risk.
//
bool SiIsEnterpriseFunctionsRestrictedOnOpenSource(CEDAR *c)
{
char region[128];
bool ret = false;
// Validate arguments
if (c == NULL)
{
return false;
}


SiGetCurrentRegion(c, region, sizeof(region));

if (StrCmpi(region, "JP") == 0 || StrCmpi(region, "CN") == 0)
{
ret = true;
}

return ret;
}