I'm currently converting a whole lot of IP address data from some quite ghastly flat files.<BR>Ghastliness aside, I'm trying to sort out a way to check each IP listed to check if it's a subnet address ...
Look, I know that the pool of IPv4 addresses running out is a serious topic that requires a serious solution, and we should all be moving to IPv6 as soon as possible. But before we shelve those old IP ...
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