Does Android 4.2 support IPsec IKEv2? Does Android 4.2 support IPsec IKEv2?

If not, does any other version of Android support IPsec IKEv2?
No Android version natively supports IKEv2 yet. But you can install the free and open-source strongSwan VPN Client that uses IKEv2 and runs on Android 4 and newer.