Now NetworkManager generates resolv.conf .. and starts with legacy IP / 2017-07-17

I removed rdnssd and resolvconf and fixed the symlink linking /var/run/NetworkManager/resolv.conf and /etc/resolv.conf by hand. The file /etc/NetworkManager/NetworkManager.conf now says:

dns=none
rc-manager=file

But now I run into the 'NetworkManager prefers IPv4 resolvers' again, leaving me with the resolvers from the DHCP answer before those from the IPv6 route advertisment. The search domains are fine now.