@Michael Heimann
yeah, the idea IS to have a workaround for ssh, and only for it (or some other 
server-software).

with tempaddr = 2 you have a dynamic and a static ip, and softwares are
using the dynamic by default, if not configured otherwise.

You can surf (more) anonymously, but your ssh-session uses the static
ip, so the session does not die when the tempaddr is discarded. It
should be a user decision to use the static ip, the default should be
safe for the average user, which means that he's not exposed by a static
ip.

Server software will bind to all intefaces by default, so a http or ssh
server will be reachable on the dynamic address (mostly useless for you)
and the static address (useful). Client software which needs long
sessions often can be configured to use a specific from-ip, as i showed
you the manual for the ssh-client.

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https://bugs.launchpad.net/bugs/176125

Title:
  Ubuntu should activate the IPv6 privacy extension by default (echo 2
  >/proc/sys/net/ipv6/conf/all/use_tempaddr)

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