Updated README.

README.md

@@ -2,11 +2,14 @@
 
 ![Build status](https://github.com/zlogic/pterodapter/actions/workflows/cargo-build.yml/badge.svg)
 
-Pterodapter is a userspace VPN adapter that acts as an open/industry standard VPN server, and forwards traffic to 
+Pterodapter is a userspace SOCKS5-to-FortiVPN adapter that acts as an open standard SOCKS5 proxy server, and forwards traffic to a FortiVPN network.
 
 No drivers to install or root access to create tun/utun devices.
 
-At the moment, the plan is to build an L2TP (or Wireguard) adapter to connect to FortiVPN.
+As it can be used with [PAC files](https://en.wikipedia.org/wiki/Proxy_auto-config), hostname-based routing might be a lot easier.
+(especially if the IP address keeps changing, and routing tables keep getting out of date).
+
+[smoltcp](https://github.com/smoltcp-rs/smoltcp) emulates L3 physical hardware and allows conversion of L5 (SOCKS5) traffic into L3 packets.
 
 # Reference
 
@@ -17,12 +20,14 @@ Used to study and re-implement the FortiVPN protocol:
 * [openfortivpn](https://github.com/adrienverge/openfortivpn)
 * [OpenConnect](https://www.infradead.org/openconnect/)
 
+The idea of using a proxy (to run as non-root) was originally suggested in [the OpenConnect documentation](https://www.infradead.org/openconnect/nonroot.html).
+
 ## WireGuard gateways
 
 WireGuard's VPN client is available in the App Store, and supports split tunneling out of the box.
+Could be a possible alternative to proxies - keep split tunneling, but avoid conversion between OSI layers.
 
-If L2TP doesn't work, this would be a good starting point;
-in addition, this shows how to do L2/L3 conversion and emulate remote endpoints.
+These examples show how to do L2/L3 conversion and emulate remote endpoints.
 
 * [onetun](https://github.com/aramperes/onetun) - listen on a socket and redirect to a server through WireGuard
 * [wgslirpy](https://github.com/vi/wgslirpy) - runs a WireGuard server and redirects to an external service