Dike out some cruft in Windows tap that we will never use, like TUN mode, DHCP masq, ARP emulation, NDP emulation, and related. We operate only in L2 mode. All tap, no tun.

vsprojects/TapDriver/types.h

@@ -136,6 +136,7 @@ typedef struct _TapAdapter
   // Adapter power state
   char m_DeviceState;
 
+#if 0
   // Info for point-to-point mode
   BOOLEAN m_tun;
   IPADDR m_localIP;
@@ -145,7 +146,9 @@ typedef struct _TapAdapter
   ETH_HEADER m_UserToTap;
   ETH_HEADER m_UserToTap_IPv6;		// same as UserToTap but proto=ipv6
   MACADDR m_MAC_Broadcast;
+#endif
 
+#if 0
   // Used for DHCP server masquerade
   BOOLEAN m_dhcp_enabled;
   IPADDR m_dhcp_addr;
@@ -158,6 +161,7 @@ typedef struct _TapAdapter
   ULONG m_dhcp_user_supplied_options_buffer_len;
   BOOLEAN m_dhcp_received_discover;
   ULONG m_dhcp_bad_requests;
+#endif
 
   // Help to tear down the adapter by keeping
   // some state information on allocated