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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.
A sense of desolation and uncertainty, of futility, of the baselessness of aspirations, of the vanity of endeavor, and a thirst for a life giving water which seems suddenly to have failed, are the signs in conciousness of this necessary reorganization of our lives. It is difficult to believe that this state of mind can be produced by the recognition of such facts as that unsupported stones always fall to the ground. -- J. W. N. Sullivan

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