How are existing VPN applications creating new profiles in Android 2.0 - 2.3?

Question

After much searching on StackOverflow, it seems rooting a device in the only way to create a VPN profile pre-4.0

My question is how do the following apps do it without r

Answer 1

you could just redirect the user to the VPN settings screen via an undocumented intent.

        Intent intent = new Intent("android.net.vpn.SETTINGS");
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);

This seems to work on 1.6-4.1 phones.