[Pkg-utopia-maintainers] Bug#794571: network-manager: Disables net.ipv6.conf.<interface>.accept_ra if IPv6 method is set to "Automatic, DHCP only"

[Axel Beckert]

Package: network-manager
Version: 1.0.4-1
Tags: ipv6

For a specific wifi connection I know that IPV6 SLAAC won't succeed but
DHCPv6 will. So I've set the "Method" to "Automatic, DHCP only" under
"IPv6 Settings".

The interface also gets the expected IP addresses, but routes are no
more set because net.ipv6.conf.wlp3s0.accept_ra is unexpectedly set to
0.

This doesn't make sense at all, because with DHCPv6 routes are still
announced by the routers. DHCPv6 does not even have support for
announcing routes.

So please stop setting net.ipv6.conf.*.accept_ra on the according
interface if the IPv6 method is set to "Automatic, DHCP only".

In case my expected semantic is not the intended one, please label that
option differently (e.g. "Automatic IP via DHCPv6, no routing") and add
another option labeled "Automatic, use DHCPv6".