Regular expression that matches valid IPv6 addresses

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Published on 2008-09-10T05:57:24Z Indexed on 2010/06/08 16:42 UTC
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networking

I'm having trouble writing a regular expression that matches valid IPv6 addresses, including those in their compressed form (with "::" or leading zeros omitted from each byte pair).

Can someone suggest a regular expression that would fulfill the requirement?

I'm considering expanding each byte pair and matching the result with a simpler regex.

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