#8 ListenIP on a 'per tunnel' basis

[Markus Bubendorf]

At the moment it is not possible to use ListenIP on a
per tunnel basis. All tunnels either listen on all
local IP addresses or all tunnels listen on a certain
IP address.

It would be fine to extend the 'tunnel' command syntax from
<localPorts>:<targethost>:<targetPorts>
to
<localIP>:<localPorts>:<targethost>:<targetPorts>

That way I could make multiple tunnels using the same
port nummer but using different local IP addresses.

This is very helpful for programs which use a fixed
port number. I can create a new local IP address and
configure the program to use this new IP address. All
traffic to this address/port is then redirected to the
target host.