nanog mailing list archives

Re: Ignorant mass-media strikes again


From: "Forrest W. Christian" <forrestc () iMach com>
Date: Wed, 9 Dec 1998 18:21:50 -0700 (MST)

On Wed, 9 Dec 1998, Jon Zeeff wrote:

Is there equipment that, short of a fixed ip, tries to reassign the same
ip back to the same user?  Ie, puts the ip address in a fifo but pulls it
out early if it's the same user calling back.

I was working on some radius code to do this.   Bascically allocate
everything out of a big ip pool and keep track of which user each IP was
assigned to last, and if when they re-connected, the IP was still
available, re-assign it to them.

However, I quit working on it when I discovered the following...

I bet Ms. Thorton never heard that TCP can preserve idle connections
when dial-up link is down.  Yeah, dial-on-demand is such a hard thing
to do!

This is great and wonderful, EXCEPT the microsoft stack WILL NOT keep a
connection open across multiple "dialin sessions".  This effectively
breaks any desire to be semi-statically allocated.

Microsoft's crappy stack strikes again....

- Forrest W. Christian (forrestc () imach com) 
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