What's new in v4

[Alan DeKok]

  No, we're not ready to release v4 yet, sorry.  But hopefully soon.

  The good news is that we're done the major re-architecture.  That took much longer than planned, but actual paying work kept getting in the way.  That's fine, people need to eat. :)

  We've made good progress in the last month or so.  To the point where it's making significant improvements.  This message highlights some good and bad things.

  First the bad:

* RADIUS/TLS (radsec) isn't there.  It shouldn't be hard, but we've been working on higher priority things

* TTLS / PEAP / FAST / TEAP aren't there.  These are harder, but not impossible.

  Then the good:  Many things are much much, much simpler than in v4.

* update sections are no longer needed.  The debug output will even tell you how to convert update sections to the new syntax!

	&User-Name = "foo"
	&NAS-Port = 1
	&reply.Reply-Message = "Hello %{User-Name}"

* math can be done in-place:

	&NAS-Port = 5 + 2
	&reply.Reply-Message = "Hello " + &User-Name

	if (&User-Name == "foo" + "bar") ...

* we no longer need %{expr:...} to do math.  We can just do it in place if necessary!

	&reply.Reply-Message := "We have 1 + 2 = %{1 + 2}"

* the dynamic expansion syntax has changed to be more sane.  They look like functions with comma-separated arguments

	v3: %{md5:foo bar baz}

	v4: %md5(foo, bar, baz) 

* The horrible alternation syntax is gone.  The new syntax is simpler, and easier to read if there are multiple layers of nesting

	v3:  %{${Stripped-User-Name}:-%{User-Name}}

	v4: %{&Stripped-User-Name || &User-Name}

  There are many, many, other fixes and features.  TACACS+, DHCPv4 is fully supported.  DHCPv6 (!), DNS (!!!!). and even listening to an OpenLDAP replication stream (!!!!!)

  Alan DeKok.