From david-sarah@jacaranda.org Fri Jul 6 02:31:57 2018 From: David-Sarah Hopwood To: cypherpunks-legacy@lists.cpunks.org Subject: Re: [tahoe-dev] [tahoe-lafs] #867: use ipv6 Date: Fri, 06 Jul 2018 02:31:57 +0000 Message-ID: <172289281591.3881296.12438162996393849166.generated@mail.pglaf.org> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0154478989508089906==" --===============0154478989508089906== Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On 16/02/13 21:05, Eugen Leitl wrote: > On Sat, Feb 16, 2013 at 03:14:54PM +0200, Randall Mason wrote: >> On Fri, Feb 15, 2013 at 9:06 PM, Greg Troxel wrote: >> >>> Also, fe80:: addresses should probably be ignored, as they are meant to >>> be used only on a single link. >=20 > Please do not forget http://en.wikipedia.org/wiki/Cjdns and related, which >=20 > cjdns addresses are the first 16 bytes (128 bits) of the SHA-512 of the > public key. All addresses must begin with the byte 0xFC, which in IPv6 reso= lution, > is a private address (so there is no collision with any external Internet a= ddresses). The prefix FC00::/7 (i.e. first byte 0xFC or 0xFD) is reserved for "unique local addresses" (see http://en.wikipedia.org/wiki/Unique_local_addre= ss and RFC 4193). However, I don't think that the arguments that Greg Troxel put forward apply to such addresses, in general. It's quite plausible that a Tahoe-LAFS grid could be made up entirely of nodes that are inter-routable using FC00::/7 addresses. --=20 David-Sarah Hopwood b=1A% ----- End forwarded message ----- --=20 Eugen* Leitl leitl http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE --===============0154478989508089906==--