diff --git a/doc/html/man3/3proxy.cfg.3.html b/doc/html/man3/3proxy.cfg.3.html
index c8bca2b..b343ff8 100644
--- a/doc/html/man3/3proxy.cfg.3.html
+++ b/doc/html/man3/3proxy.cfg.3.html
@@ -181,10 +181,15 @@ connections to. By default, connections to any interface are
 accepted. Unix domain sockets can be specified with
 <i>-iunix:/path/to/socket</i> syntax. On Linux, abstract
 sockets use <i>-iunix:@socketname</i> syntax. <b><br>
--N</b> (for socks) External NAT address 3proxy reports to
-client for BIND and UDPASSOC By default external address is
-reported. It&rsquo;s only useful in the case of IP-IP NAT
-(will not work for PAT) <b><br>
+-Ne</b> (for socks) External NAT address (between 3proxy and
+destination server) to report to client for CONNECT and
+BIND. By default external address is reported. It&rsquo;s
+only useful in the case of IP-IP NAT (will not work for
+PAT). <b><br>
+-Ni</b> (for socks) Internal NAT address (between client and
+3proxy) to report to client for UDPASSOC. By default
+internal address is reported. It&rsquo;s only useful in the
+case of IP-IP NAT (will not work for PAT). <b><br>
 -H</b> (for all services) Expect HAProxy PROXY protocol v1
 header on incoming connection. This allows the proxy to
 receive real client IP address from HAProxy or other load
diff --git a/man/3proxy.cfg.3 b/man/3proxy.cfg.3
index 71be6cb..b766c43 100644
--- a/man/3proxy.cfg.3
+++ b/man/3proxy.cfg.3
@@ -193,10 +193,11 @@ syntax. On Linux, abstract sockets use
 .I -iunix:@socketname
 syntax. 
 .br
-.B -N
-(for socks) External NAT address 3proxy reports to client for BIND and UDPASSOC
-By default external address is reported. It's only useful in the case
-of IP-IP NAT (will not work for PAT)
+.B -Ne
+(for socks) External NAT address (between 3proxy and destination server) to report to client for CONNECT and BIND. By default external address is reported. It's only useful in the case of IP-IP NAT (will not work for PAT).
+.br
+.B -Ni
+(for socks) Internal NAT address (between client and 3proxy) to report to client for UDPASSOC. By default internal address is reported. It's only useful in the case of IP-IP NAT (will not work for PAT).
 .br
 .B -H
 (for all services) Expect HAProxy PROXY protocol v1 header on incoming connection.