From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Y5Xkg-0005Fd-97 for bitcoin-development@lists.sourceforge.net; Mon, 29 Dec 2014 10:40:42 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.113 as permitted sender) client-ip=62.13.148.113; envelope-from=pete@petertodd.org; helo=outmail148113.authsmtp.com; Received: from outmail148113.authsmtp.com ([62.13.148.113]) by sog-mx-2.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1Y5XkH-00030H-Mi for bitcoin-development@lists.sourceforge.net; Mon, 29 Dec 2014 10:40:42 +0000 Received: from mail-c235.authsmtp.com (mail-c235.authsmtp.com [62.13.128.235]) by punt17.authsmtp.com (8.14.2/8.14.2/) with ESMTP id sBTAeBRD096615; Mon, 29 Dec 2014 10:40:11 GMT Received: from [10.215.242.152] ([46.115.20.242]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id sBTAe2QR084201 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 29 Dec 2014 10:40:06 GMT User-Agent: K-9 Mail for Android In-Reply-To: <3685166.ROb67lzbMM@coldstorage> References: <3685166.ROb67lzbMM@coldstorage> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 From: Peter Todd Date: Mon, 29 Dec 2014 11:39:52 +0100 To: Thomas Zander , bitcoin-development@lists.sourceforge.net Message-ID: <9C411ACE-B4C7-4AD0-B644-8DD4FC88352C@petertodd.org> X-Server-Quench: 0ebb2c35-8f47-11e4-b396-002590a15da7 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aAdMdAsUHFAXAgsB AmIbWlReVF17WWs7 bwxPbARYfEhOQQdu UldNRFdNFUsrc3hw Uxx/MBl6cwdGeTB3 ZERqEHAODhZ4JkV4 X0YCEWobZGY1bH1N U0leagNUcgZDfk5E bwQuUz1vNG8XDQg5 AwQ0PjZ0MThBJSBS WgQAK04nCW0CBCI7 SAoLBTUiByUA X-Authentic-SMTP: 61633532353630.1023:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 46.115.20.242/465 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Score: -1.5 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 TIME_LIMIT_EXCEEDED Exceeded time limit / deadline X-Headers-End: 1Y5XkH-00030H-Mi Subject: Re: [Bitcoin-development] Cartographer X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Dec 2014 10:40:42 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 A big one is the privacy is way too good: every DNS request goes through multiple levels of caching and indirection, so there's no way to figure out who made the request to subject them additional targeting. A connection-oriented protocol gets rid of all those protections, giving us seed operators monetisation opportunities like selling usage statistics, per-client targeted results, etc. We recently got rid of all the "call-home" functionality that previously gave this type of insight; a connecyion-oriented seed protocol gives us this right back. There's also this pesky problem of ISP's censoring DNS results with dumb automated systems to block malware - easily fixed with Gregory Maxwell's suggestion of permuting the results with XOR - but that kind of end-user driven solution really misses out in the needs of other Bitcoin stakeholders like law enforcement and marketing companies. On 29 December 2014 09:47:29 CET, Thomas Zander wrote: >On Sunday 28. December 2014 18.25.29 Mike Hearn wrote: >> Lately we have been bumping up against the limitations of DNS as a >protocol >> for learning about the p2p network. > >Can you explain further where limitations and problems were hit? -----BEGIN PGP SIGNATURE----- Version: APG v1.1.1 iQFQBAEBCAA6BQJUoS94MxxQZXRlciBUb2RkIChsb3cgc2VjdXJpdHkga2V5KSA8 cGV0ZUBwZXRlcnRvZGQub3JnPgAKCRAZnIM7qOfwhQzHB/97jRf4iX0v/zDW0EkT 8My2ExCdOqwYToxqTF0DQhwBjVzh2OHH9tVFKPXfgg87xtIxYZjx70yQpw7O4anw 7E5eJpFRjTayafclzRupgMn2AVT9AN45zjxkEutAEO27mxJ2p0OQPkNKzVR38sGW 95siatZMej68jflr0o0JrRePaDn3jufZEYQ5IvS80HxEwjzLCx/qCnPKkiKEQjr0 EHbovZo/5DNmJys4an+hoZkPeDRGw30w86kxXaY2SQP8aefswfg6rTOcrfkuQQfQ AEYRZCZb6XxkL/gLU1dSgidswg+wgt/JW7QB+n6Z0fMGnX92EAxpwrvQUxDm55sC HhOT =dRuK -----END PGP SIGNATURE-----