Date: Fri, 02 Jun 2017 14:38:11 +0200 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: freebsd-net@freebsd.org Cc: Gary Palmer <gpalmer@freebsd.org>, Matthew Seaman <matthew@freebsd.org> Subject: Re: Ipv6 / DNS questions Message-ID: <1c7e8836f1df2f95a8a7ce8a903ddfa5@ijs.si> In-Reply-To: <a82571bb-8027-8cb5-37d5-b82051b9b671@FreeBSD.org> References: <759e086e-e6c3-3b3a-1578-834af5adce0d@denninger.net> <7b0eda86-34d3-9bf7-df5f-45060a956942@freebsd.org> <20170602113010.GA74033@in-addr.com> <a82571bb-8027-8cb5-37d5-b82051b9b671@FreeBSD.org>
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I wish FreeBSD would adopt the dhcpcd daemon from the NetBSD project (2-clause BSD license) as a standard DHCP client for IPv4 and IPv6, as some other OSes have done by now. It is currently available in FreeBSD ports as net/dhcpcd. Among other features it supports RFC 7217, i.e. stable privacy address, which should be as easy to configure in FreeBSD as is now the (mostly undesirable) ipv6_privacy="YES", but is currently much too complicated for an average user. Mark 2017-06-02 13:38, Matthew Seaman wrote: > On 2017/06/02 12:30, Gary Palmer wrote: >>> Assuming that you always get the same /64 assigned to your gateway, >>> then >>> the address SLAAC assigns to your server will be constant so long as >>> you're on the same hardware, since the SLAAC address is generated >>> from >>> the network prefix and the MAC address of the NIC. In that case, it >>> often suffices to update the DNS manually. > >> Only if >> ipv6_privacy="YES" >> is not set. > > Ah, but ipv6_privacy is intended for use on personal laptops and other > devices where you'ld prefer not to have your MAC address available as a > tracking cookie when acting as a web client. > > It's not intended for use on a web server. Even if you do turn it on > IIRC the effect is to add alias IPs on that network interface, > alongside > the standard address that SLAAC would generate anyhow. > Cheers, > Matthew
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