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swagg boi's (RFC 4193 compliant) IPv6 ULA prefix spitter-outter!!

I got bored playing with html forms today and what I ended up with is this nifty form that turns a given MAC address into a /48 IPv6 ULA prefix. The form POSTs this string to a cgi script which is essentially a quick re-write of the first Perl script I ever wrote (just added some html cruft to the STDOUT). I got the idea for the first script since I couldn't find a simple way to generate an ULA from my terminal. I had to open up a browser and find other similar web-based tools with a web search but several of these didn't seem to really follow the RFC, i.e. printing out a /64 instead of a /48 or printing out the prefix with no MAC address or even a field to give it one. Maybe some wayward network nerd standing up an IPv6 lab will find this useful :)

Limit of 1,208,925,819,614,629,174,706,176 ULA addresses per customer.

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	"I'll tell you what I know, then," he decided.  "The pin I'm wearing
means I'm a member of the IA.  That's Inamorati Anonymous.  An inamorato is
somebody in love.  That's the worst addiction of all."
	"Somebody is about to fall in love," Oedipa said, "you go sit with
them, or something?"
	"Right.  The whole idea is to get where you don't need it.  I was
lucky.  I kicked it young.  But there are sixty-year-old men, believe it or
not, and women even older, who might wake up in the night screaming."
	"You hold meetings, then, like the AA?"
	"No, of course not.  You get a phone number, an answering service
you can call.  Nobody knows anybody else's name; just the number in case
it gets so bad you can't handle it alone.  We're isolates, Arnold.  Meetings
would destroy the whole point of it."
		-- Thomas Pynchon, "The Crying of Lot 49"
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