Re: Building a new censorship circumvention tool: what do we need to know?

Ivan Vilata-i-Balaguer <ivan-unmR2TPCNHyyZ7Fz/[email protected]> Tue, 21 Feb 2017 11:20:44 +0100
Newsgroups gmane.network.freenet.support
Message-ID <[email protected]>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