[c-nsp] IOS - ipv6 uppercase in config - why ?

[Brandon Applegate]

Is there a reason that ipv6 addresses are stored with uppercase letters in 
config ?

We can type them in either case and it's understood.  Why convert to upper 
when writing config ?

At issue is when I do 'show run | inc 2607:ff70' and get nothing I scratch 
my head for a second.  Then I try 'show run | inc 2607:FF70' and get what 
I expected.  This seems inefficent, error-prone, and likely to drive Randy 
Bush crazy :) <ducks>

Not a huge deal I guess, but I just can't understand why I have to 
remember to explicitly capitialize all [a-f] when the default would have 
been lower-case (less fingers).

--
Brandon Applegate - CCIE 10273
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