npm access token alowed IP ranges field doesn’t support IPv6 CIDR ranges

[lucaswerkmeister]

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The Allowed IP Ranges field when creating a token (see https://docs.npmjs.com/creating-and-viewing-access-tokens) doesn’t support IPv6 CIDR ranges. This means that, if I’m publishing from an IPv6-enabled environment, I effectively can’t use allowed IP ranges at all, because it doesn’t seem to be possible to force npm publish to use IPv4 only.

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