Ipv6 / DNS questions

[Mark Martinec]

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