[gentoo-user] ipv6 privacy random addresses

[7v5w7go9ub0o]

Have activated the privacy extensions on a dual stack (native) ipv6
configuration. A random local address is generated for each boot (for
eth0). I'd like to be able to change it within a session.

ip -6 address flush dev eth0; followed by /etc/init.d/net.eth0 restart;
will generate a new random address ("global temporary dynamic") - but
one time only.

So the question becomes, how could I do this repeatedly within a session?

(ISTM there is a variable somewhere that limits the number of
regenerations allowed - perhaps that could be tweaked? Alternatively,
perhaps I could configure the /etc/conf.d/net script to assign a local
ipv6 net address using random numbers generated within the net script?
I'm a newbie, and would appreciate any corrections, flames and
especially examples)

TIA