ip.isPrivate not contain all private ips

I encountered a private ip prefix with 100.64, and i found some ip address region not include in your code: https://en.wikipedia.org/wiki/Reserved_IP_addresses

Locate the implementation of ip.isPrivate and compare its recognized ranges with the reserved-address list linked in the issue. Check the 100.64 range first, then verify the other missing regions mentioned by the reference; done means isPrivate recognizes the intended private or reserved addresses. No test file is named, so inspect existing tests before adding coverage.

Written by the indexing model from the issue text.