Fwd: [Click] ToDevice + ARP woes

[Eddie Kohler]

#2

Begin forwarded message:

> From: John Austen <deymious at yahoo.com>
> Date: December 9, 2004 11:46:15 PM PST
> To: Eddie Kohler <kohler at CS.UCLA.EDU>
> Subject: Re: [Click] ToDevice + ARP woes
>
>
> Actually I found another oddity in Click!... there is
> an IPUnencap element that exists to pull off the
> outermost IP header of a packet. I tried to use it,
> but Click! would always report to me the values of the
> outermost IP header that was apparently stripped off.
> Only after the project deadline did I find that I
> needed to run MarkHeader as well. This was not
> intuitive at all. It would probably be useful to add
> in an automatic call to MarkHeader on running
> IPUnencap with a specific parameter set.
>
> Actually a friend of mine and I were discussing Click!
> recently. We both believe it certainly has some
> merits, but it needs some serious TLC in order to be
> made more usable. The unit programming model certainly
> appeals and seems to be well suited to the goals of
> the language, but more logical and apparent
> functionality would help... as well as some way to use
> basic logic, regular expressions, variables, etc. If
> decisions are to be made based on payload, some type
> of pattern matching would be necessary. Some proxy
> elements could prove useful as well... for instance an
> element that masquerades as a web browser, so that the
> Click! router can examine the incoming flows for all
> types of nasty data, and pass the safe stuff back up
> to the user... or even pass back code that was
> 'pacified' by Click!.
>
>
>
>
>
> 		
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