Salt official documentation says ipv6_autoconf is the correct name
but
/usr/lib/python3/dist-packages/salt/templates/debian_ip/debian_eth.jinja
shows autoconf is actually correct. Found accept_ra in there as well

This should allow for automatically assigned IPv6 network addresses
via SLAAC.

This allows rx/tx offloading to pass through to the Salt network
module so that it can be disabled.

This patch requires my salstatck/salt pull
request [#25165](https://github.com/saltstack/salt/pull/25165).

Signed-off-by: René Jochum <rene@jochums.at>

Conflicts:
	network/defaults.yaml