Feature Request: Ability to specify local bind address for ssh(1) -W

[Philipp Marek]

> However, assuming that there's some *regularity* to your need, you 
> might
> be able to tell the kernel itself to adhere to it (e.g., for Linux, use
> iptables to explicitly SNAT connections matching a pattern to a 
> specific
> source IP). No more extra processes that can linger that way.

On Linux you can set the requested source IP in the routing table
per-destination; and, together with iptables, you can also correlate
routes with executables and users.

So you can have a range of UIDs use outgoing address 1, another
set use address 2, etc.