> > This sounds like something which should be in the routing table (on a
> > per-*route* basis) rather than managed by sysctl...

It definitely shouldn't be managed by sysctl - it's much more like a
network ioctl than it is like other sysctl things.  But hanging an IP
source address of of every routing entry is going to be bloaty, and it
could be unreliable if there is more than one applicable route - what
if you send TCP packets from one source sometimes, and a second source
other times?  It may be the right thing to do, but it bears careful
consideration.

			       _MelloN_