My company uses Microsoft DirectAccess for VPN connectivity. Your script does not detect an active VPN on my system. Output is below. Hope this helps:
All network adapters:
DNSDomain DefaultIPGateway DHCPServer IPEnabled PhysicalAdapter Manufacturer Description
--------- ---------------- ---------- --------- --------------- ------------ -----------
False True Intel Corporation Intel(R) 82579LM Gigabit Network
Connection
False False Microsoft Microsoft Kernel Debug Network
Adapter
{192.168.1.1} 192.168.1.1 True True Broadcom Dell Wireless 1504 802.11b/g/n
(2.4GHz)
False False Microsoft Microsoft Wi-Fi Direct Virtual
Adapter
False False Microsoft ISATAP Adapter
False False Microsoft Bluetooth Device (Personal Area
Network)
True False VMware, Inc. VMware Virtual Ethernet Adapter for
VMnet1
False False Microsoft Teredo Tunneling Adapter
False False Microsoft Microsoft IP-HTTPS Platform Adapter
False False WAN Miniport (SSTP)
False False WAN Miniport (IKEv2)
False False WAN Miniport (PPPOE)
False False WAN Miniport (PPTP)
False False WAN Miniport (L2TP)
False False WAN Miniport (IP)
False False WAN Miniport (IPv6)
False False WAN Miniport (Network Monitor)
False False RAS Async Adapter
False False Microsoft ISATAP Adapter
False False Microsoft Microsoft ISATAP Adapter
True False VMware, Inc. VMware Virtual Ethernet Adapter for
VMnet8
False False Microsoft Microsoft ISATAP Adapter
False False Microsoft Microsoft ISATAP Adapter
False False Microsoft ISATAP Adapter
False False Microsoft ISATAP Adapter
False False Microsoft ISATAP Adapter
False False Microsoft ISATAP Adapter
False False Microsoft ISATAP Adapter
Filtered to possible VPN network adapters:
DNSDomain DefaultIPGateway DHCPServer IPEnabled PhysicalAdapter Manufacturer Description
--------- ---------------- ---------- --------- --------------- ------------ -----------
False False Microsoft Microsoft Wi-Fi Direct Virtual Adapter
False False Microsoft Teredo Tunneling Adapter
False False Microsoft Microsoft IP-HTTPS Platform Adapter
False False WAN Miniport (SSTP)
False False WAN Miniport (IKEv2)
False False WAN Miniport (PPTP)
False False WAN Miniport (L2TP)
Filtered to possible VPN network adapters (IP Enabled):
VPN Connection Not Detected